Class: Google::Cloud::Dialogflow::V2::Intent

Inherits:

Object

• Object
• Google::Cloud::Dialogflow::V2::Intent

Extended by:

Protobuf::MessageExts::ClassMethods

Includes:

Protobuf::MessageExts

Defined in:

proto_docs/google/cloud/dialogflow/v2/intent.rb

Overview

An intent categorizes an end-user's intention for one conversation turn. For each agent, you define many intents, where your combined intents can handle a complete conversation. When an end-user writes or says something, referred to as an end-user expression or end-user input, Dialogflow matches the end-user input to the best intent in your agent. Matching an intent is also known as intent classification.

For more information, see the intent guide.

Defined Under Namespace

Modules: WebhookState Classes: FollowupIntentInfo, Message, Parameter, TrainingPhrase

Instance Attribute Summary

• #action ⇒ ::String

  Optional.

• #default_response_platforms ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Platform>

  Optional.

• #display_name ⇒ ::String

  Required.

• #end_interaction ⇒ ::Boolean

  Optional.

• #events ⇒ ::Array<::String>

  Optional.

• #followup_intent_info ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::FollowupIntentInfo> readonly

  Output only.

• #input_context_names ⇒ ::Array<::String>

  Optional.

• #is_fallback ⇒ ::Boolean

  Optional.

• #live_agent_handoff ⇒ ::Boolean

  Optional.

• #messages ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Message>

  Optional.

• #ml_disabled ⇒ ::Boolean

  Optional.

• #name ⇒ ::String

  Optional.

• #output_contexts ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Context>

  Optional.

• #parameters ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Parameter>

  Optional.

• #parent_followup_intent_name ⇒ ::String

  Read-only after creation.

• #priority ⇒ ::Integer

  Optional.

• #reset_contexts ⇒ ::Boolean

  Optional.

• #root_followup_intent_name ⇒ ::String readonly

  Output only.

• #training_phrases ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase>

  Optional.

• #webhook_state ⇒ ::Google::Cloud::Dialogflow::V2::Intent::WebhookState

  Optional.

Instance Attribute Details

#action ⇒ ::String

Returns Optional. The name of the action associated with the intent. Note: The action name must not contain whitespaces.

Returns:

• (::String) —

  Optional. The name of the action associated with the intent. Note: The action name must not contain whitespaces.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#default_response_platforms ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Platform>

Returns Optional. The list of platforms for which the first responses will be copied from the messages in PLATFORM_UNSPECIFIED (i.e. default platform).

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Platform>) —

  Optional. The list of platforms for which the first responses will be copied from the messages in PLATFORM_UNSPECIFIED (i.e. default platform).

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#display_name ⇒ ::String

Returns Required. The name of this intent.

Returns:

• (::String) —

  Required. The name of this intent.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#end_interaction ⇒ ::Boolean

Returns Optional. Indicates that this intent ends an interaction. Some integrations (e.g., Actions on Google or Dialogflow phone gateway) use this information to close interaction with an end user. Default is false.

Returns:

• (::Boolean) —

  Optional. Indicates that this intent ends an interaction. Some integrations (e.g., Actions on Google or Dialogflow phone gateway) use this information to close interaction with an end user. Default is false.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#events ⇒ ::Array<::String>

Returns Optional. The collection of event names that trigger the intent. If the collection of input contexts is not empty, all of the contexts must be present in the active user session for an event to trigger this intent. Event names are limited to 150 characters.

Returns:

• (::Array<::String>) —

  Optional. The collection of event names that trigger the intent. If the collection of input contexts is not empty, all of the contexts must be present in the active user session for an event to trigger this intent. Event names are limited to 150 characters.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#followup_intent_info ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::FollowupIntentInfo> (readonly)

Returns Output only. Read-only. Information about all followup intents that have this intent as a direct or indirect parent. We populate this field only in the output.

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Intent::FollowupIntentInfo>) —

  Output only. Read-only. Information about all followup intents that have this intent as a direct or indirect parent. We populate this field only in the output.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#input_context_names ⇒ ::Array<::String>

Returns Optional. The list of context names required for this intent to be triggered. Format: projects/<Project ID>/agent/sessions/-/contexts/<Context ID>.

Returns:

• (::Array<::String>) —

  Optional. The list of context names required for this intent to be triggered. Format: projects/<Project ID>/agent/sessions/-/contexts/<Context ID>.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#is_fallback ⇒ ::Boolean

Returns Optional. Indicates whether this is a fallback intent.

Returns:

• (::Boolean) —

  Optional. Indicates whether this is a fallback intent.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#live_agent_handoff ⇒ ::Boolean

Returns Optional. Indicates that a live agent should be brought in to handle the interaction with the user. In most cases, when you set this flag to true, you would also want to set end_interaction to true as well. Default is false.

Returns:

• (::Boolean) —

  Optional. Indicates that a live agent should be brought in to handle the interaction with the user. In most cases, when you set this flag to true, you would also want to set end_interaction to true as well. Default is false.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#messages ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Message>

Returns Optional. The collection of rich messages corresponding to the Response field in the Dialogflow console.

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Intent::Message>) —

  Optional. The collection of rich messages corresponding to the Response field in the Dialogflow console.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#ml_disabled ⇒ ::Boolean

Returns Optional. Indicates whether Machine Learning is disabled for the intent. Note: If ml_disabled setting is set to true, then this intent is not taken into account during inference in ML ONLY match mode. Also, auto-markup in the UI is turned off.

Returns:

• (::Boolean) —

  Optional. Indicates whether Machine Learning is disabled for the intent. Note: If ml_disabled setting is set to true, then this intent is not taken into account during inference in ML ONLY match mode. Also, auto-markup in the UI is turned off.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#name ⇒ ::String

Returns Optional. The unique identifier of this intent. Required for Intents.UpdateIntent and Intents.BatchUpdateIntents methods. Format: projects/<Project ID>/agent/intents/<Intent ID>.

Returns:

• (::String) —

  Optional. The unique identifier of this intent. Required for Intents.UpdateIntent and Intents.BatchUpdateIntents methods. Format: projects/<Project ID>/agent/intents/<Intent ID>.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#output_contexts ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Context>

Returns Optional. The collection of contexts that are activated when the intent is matched. Context messages in this collection should not set the parameters field. Setting the lifespan_count to 0 will reset the context when the intent is matched. Format: projects/<Project ID>/agent/sessions/-/contexts/<Context ID>.

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Context>) —

  Optional. The collection of contexts that are activated when the intent is matched. Context messages in this collection should not set the parameters field. Setting the lifespan_count to 0 will reset the context when the intent is matched. Format: projects/<Project ID>/agent/sessions/-/contexts/<Context ID>.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#parameters ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::Parameter>

Returns Optional. The collection of parameters associated with the intent.

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Intent::Parameter>) —

  Optional. The collection of parameters associated with the intent.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#parent_followup_intent_name ⇒ ::String

Returns Read-only after creation. The unique identifier of the parent intent in the chain of followup intents. You can set this field when creating an intent, for example with CreateIntent or BatchUpdateIntents, in order to make this intent a followup intent.

It identifies the parent followup intent. Format: projects/<Project ID>/agent/intents/<Intent ID>.

Returns:

• (::String) —

  Read-only after creation. The unique identifier of the parent intent in the chain of followup intents. You can set this field when creating an intent, for example with CreateIntent or BatchUpdateIntents, in order to make this intent a followup intent.

  It identifies the parent followup intent. Format: projects/<Project ID>/agent/intents/<Intent ID>.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#priority ⇒ ::Integer

Returns Optional. The priority of this intent. Higher numbers represent higher priorities.

• If the supplied value is unspecified or 0, the service translates the value to 500,000, which corresponds to the Normal priority in the console.
• If the supplied value is negative, the intent is ignored in runtime detect intent requests.

Returns:

• (::Integer) —

  Optional. The priority of this intent. Higher numbers represent higher priorities.

  • If the supplied value is unspecified or 0, the service translates the value to 500,000, which corresponds to the Normal priority in the console.
  • If the supplied value is negative, the intent is ignored in runtime detect intent requests.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#reset_contexts ⇒ ::Boolean

Returns Optional. Indicates whether to delete all contexts in the current session when this intent is matched.

Returns:

• (::Boolean) —

  Optional. Indicates whether to delete all contexts in the current session when this intent is matched.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#root_followup_intent_name ⇒ ::String (readonly)

Returns Output only. Read-only. The unique identifier of the root intent in the chain of followup intents. It identifies the correct followup intents chain for this intent. We populate this field only in the output.

Format: projects/<Project ID>/agent/intents/<Intent ID>.

Returns:

• (::String) —

  Output only. Read-only. The unique identifier of the root intent in the chain of followup intents. It identifies the correct followup intents chain for this intent. We populate this field only in the output.

  Format: projects/<Project ID>/agent/intents/<Intent ID>.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#training_phrases ⇒ ::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase>

Returns Optional. The collection of examples that the agent is trained on.

Returns:

• (::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase>) —

  Optional. The collection of examples that the agent is trained on.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end

#webhook_state ⇒ ::Google::Cloud::Dialogflow::V2::Intent::WebhookState

Returns Optional. Indicates whether webhooks are enabled for the intent.

Returns:

• (::Google::Cloud::Dialogflow::V2::Intent::WebhookState) —

  Optional. Indicates whether webhooks are enabled for the intent.

# File 'proto_docs/google/cloud/dialogflow/v2/intent.rb', line 142

class Intent
  include ::Google::Protobuf::MessageExts
  extend ::Google::Protobuf::MessageExts::ClassMethods

  # Represents an example that the agent is trained on.
  # @!attribute [rw] name
  #   @return [::String]
  #     Output only. The unique identifier of this training phrase.
  # @!attribute [rw] type
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Type]
  #     Required. The type of the training phrase.
  # @!attribute [rw] parts
  #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part>]
  #     Required. The ordered list of training phrase parts.
  #     The parts are concatenated in order to form the training phrase.
  #
  #     Note: The API does not automatically annotate training phrases like the
  #     Dialogflow Console does.
  #
  #     Note: Do not forget to include whitespace at part boundaries,
  #     so the training phrase is well formatted when the parts are concatenated.
  #
  #     If the training phrase does not need to be annotated with parameters,
  #     you just need a single part with only the
  #     {::Google::Cloud::Dialogflow::V2::Intent::TrainingPhrase::Part#text Part.text}
  #     field set.
  #
  #     If you want to annotate the training phrase, you must create multiple
  #     parts, where the fields of each part are populated in one of two ways:
  #
  #     -   `Part.text` is set to a part of the phrase that has no parameters.
  #     -   `Part.text` is set to a part of the phrase that you want to annotate,
  #         and the `entity_type`, `alias`, and `user_defined` fields are all
  #         set.
  # @!attribute [rw] times_added_count
  #   @return [::Integer]
  #     Optional. Indicates how many times this example was added to
  #     the intent. Each time a developer adds an existing sample by editing an
  #     intent or training, this counter is increased.
  class TrainingPhrase
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # Represents a part of a training phrase.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. The text for this part.
    # @!attribute [rw] entity_type
    #   @return [::String]
    #     Optional. The entity type name prefixed with `@`.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] alias
    #   @return [::String]
    #     Optional. The parameter name for the value extracted from the
    #     annotated part of the example.
    #     This field is required for annotated parts of the training phrase.
    # @!attribute [rw] user_defined
    #   @return [::Boolean]
    #     Optional. Indicates whether the text was manually annotated.
    #     This field is set to true when the Dialogflow Console is used to
    #     manually annotate the part. When creating an annotated part with the
    #     API, you must set this to true.
    class Part
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Represents different types of training phrases.
    module Type
      # Not specified. This value should never be used.
      TYPE_UNSPECIFIED = 0

      # Examples do not contain @-prefixed entity type names, but example parts
      # can be annotated with entity types.
      EXAMPLE = 1

      # Templates are not annotated with entity types, but they can contain
      # @-prefixed entity type names as substrings.
      # Template mode has been deprecated. Example mode is the only supported
      # way to create new training phrases. If you have existing training
      # phrases that you've created in template mode, those will continue to
      # work.
      TEMPLATE = 2
    end
  end

  # Represents intent parameters.
  # @!attribute [rw] name
  #   @return [::String]
  #     The unique identifier of this parameter.
  # @!attribute [rw] display_name
  #   @return [::String]
  #     Required. The name of the parameter.
  # @!attribute [rw] value
  #   @return [::String]
  #     Optional. The definition of the parameter value. It can be:
  #
  #     - a constant string,
  #     - a parameter value defined as `$parameter_name`,
  #     - an original parameter value defined as `$parameter_name.original`,
  #     - a parameter value from some context defined as
  #       `#context_name.parameter_name`.
  # @!attribute [rw] default_value
  #   @return [::String]
  #     Optional. The default value to use when the `value` yields an empty
  #     result.
  #     Default values can be extracted from contexts by using the following
  #     syntax: `#context_name.parameter_name`.
  # @!attribute [rw] entity_type_display_name
  #   @return [::String]
  #     Optional. The name of the entity type, prefixed with `@`, that
  #     describes values of the parameter. If the parameter is
  #     required, this must be provided.
  # @!attribute [rw] mandatory
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter is required. That is,
  #     whether the intent cannot be completed without collecting the parameter
  #     value.
  # @!attribute [rw] prompts
  #   @return [::Array<::String>]
  #     Optional. The collection of prompts that the agent can present to the
  #     user in order to collect a value for the parameter.
  # @!attribute [rw] is_list
  #   @return [::Boolean]
  #     Optional. Indicates whether the parameter represents a list of values.
  class Parameter
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # A rich response message.
  # Corresponds to the intent `Response` field in the Dialogflow console.
  # For more information, see
  # [Rich response
  # messages](https://cloud.google.com/dialogflow/docs/intents-rich-messages).
  # @!attribute [rw] text
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Text]
  #     The text response.
  # @!attribute [rw] image
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
  #     The image response.
  # @!attribute [rw] quick_replies
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::QuickReplies]
  #     The quick replies response.
  # @!attribute [rw] card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Card]
  #     The card response.
  # @!attribute [rw] payload
  #   @return [::Google::Protobuf::Struct]
  #     A custom platform-specific response.
  # @!attribute [rw] simple_responses
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponses]
  #     The voice and text-only responses for Actions on Google.
  # @!attribute [rw] basic_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard]
  #     The basic card response for Actions on Google.
  # @!attribute [rw] suggestions
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestions]
  #     The suggestion chips for Actions on Google.
  # @!attribute [rw] link_out_suggestion
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::LinkOutSuggestion]
  #     The link out suggestion chip for Actions on Google.
  # @!attribute [rw] list_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect]
  #     The list card response for Actions on Google.
  # @!attribute [rw] carousel_select
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect]
  #     The carousel card response for Actions on Google.
  # @!attribute [rw] browse_carousel_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard]
  #     Browse carousel card for Actions on Google.
  # @!attribute [rw] table_card
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard]
  #     Table card for Actions on Google.
  # @!attribute [rw] media_content
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent]
  #     The media content card for Actions on Google.
  # @!attribute [rw] platform
  #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Platform]
  #     Optional. The platform that this message is intended for.
  class Message
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods

    # The text response message.
    # @!attribute [rw] text
    #   @return [::Array<::String>]
    #     Optional. The collection of the agent's responses.
    class Text
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The image response message.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file.
    # @!attribute [rw] accessibility_text
    #   @return [::String]
    #     Optional. A text description of the image to be used for accessibility,
    #     e.g., screen readers.
    class Image
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The quick replies response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the collection of quick replies.
    # @!attribute [rw] quick_replies
    #   @return [::Array<::String>]
    #     Optional. The collection of quick replies.
    class QuickReplies
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card response message.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] image_uri
    #   @return [::String]
    #     Optional. The public URI to an image file for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Card::Button>]
    #     Optional. The collection of card buttons.
    class Card
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Contains information about a button.
      # @!attribute [rw] text
      #   @return [::String]
      #     Optional. The text to show on the button.
      # @!attribute [rw] postback
      #   @return [::String]
      #     Optional. The text to send back to the Dialogflow API or a URI to
      #     open.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The simple response message containing speech or text.
    # @!attribute [rw] text_to_speech
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. The plain text of the
    #     speech output. Mutually exclusive with ssml.
    # @!attribute [rw] ssml
    #   @return [::String]
    #     One of text_to_speech or ssml must be provided. Structured spoken
    #     response to the user in the SSML format. Mutually exclusive with
    #     text_to_speech.
    # @!attribute [rw] display_text
    #   @return [::String]
    #     Optional. The text to display.
    class SimpleResponse
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of simple response candidates.
    # This message in `QueryResult.fulfillment_messages` and
    # `WebhookResponse.fulfillment_messages` should contain only one
    # `SimpleResponse`.
    # @!attribute [rw] simple_responses
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::SimpleResponse>]
    #     Required. The list of simple responses.
    class SimpleResponses
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The basic card message. Useful for displaying information.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. The subtitle of the card.
    # @!attribute [rw] formatted_text
    #   @return [::String]
    #     Required, unless image is present. The body text of the card.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. The image for the card.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. The collection of card buttons.
    class BasicCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # The button object that appears at the bottom of a card.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the button.
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button::OpenUriAction]
      #     Required. Action to take when a user taps on the button.
      class Button
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Opens the given URI.
        # @!attribute [rw] uri
        #   @return [::String]
        #     Required. The HTTP or HTTPS scheme URI.
        class OpenUriAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods
        end
      end
    end

    # The suggestion chip message that the user can tap to quickly post a reply
    # to the conversation.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. The text shown the in the suggestion chip.
    class Suggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The collection of suggestions.
    # @!attribute [rw] suggestions
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::Suggestion>]
    #     Required. The list of suggested replies.
    class Suggestions
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The suggestion chip message that allows the user to jump out to the app
    # or website associated with this agent.
    # @!attribute [rw] destination_name
    #   @return [::String]
    #     Required. The name of the app or site this chip is linking to.
    # @!attribute [rw] uri
    #   @return [::String]
    #     Required. The URI of the app or site to open when the user taps the
    #     suggestion chip.
    class LinkOutSuggestion
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The card for presenting a list of options to select from.
    # @!attribute [rw] title
    #   @return [::String]
    #     Optional. The overall title of the list.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ListSelect::Item>]
    #     Required. List items.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle of the list.
    class ListSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the list.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional information about this option.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. The title of the list item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The main text describing the item.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # The card for presenting a carousel of options to select from.
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::CarouselSelect::Item>]
    #     Required. Carousel items.
    class CarouselSelect
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # An item in the carousel.
      # @!attribute [rw] info
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::SelectItemInfo]
      #     Required. Additional info about the option item.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. The body text of the card.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. The image to display.
      class Item
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end
    end

    # Additional info about the select item for when it is triggered in a
    # dialog.
    # @!attribute [rw] key
    #   @return [::String]
    #     Required. A unique key that will be sent back to the agent if this
    #     response is given.
    # @!attribute [rw] synonyms
    #   @return [::Array<::String>]
    #     Optional. A list of synonyms that can also be used to trigger this
    #     item in dialog.
    class SelectItemInfo
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The media content card for Actions on Google.
    # @!attribute [rw] media_type
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaType]
    #     Optional. What type of media is the content (ie "audio").
    # @!attribute [rw] media_objects
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::MediaContent::ResponseMediaObject>]
    #     Required. List of media objects.
    class MediaContent
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Response media object for media content card.
      # @!attribute [rw] name
      #   @return [::String]
      #     Required. Name of media card.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of media card.
      # @!attribute [rw] large_image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Image to display above media content.
      # @!attribute [rw] icon
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Icon to display above media content.
      # @!attribute [rw] content_url
      #   @return [::String]
      #     Required. Url where the media is stored.
      class ResponseMediaObject
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods
      end

      # Format of response media type.
      module ResponseMediaType
        # Unspecified.
        RESPONSE_MEDIA_TYPE_UNSPECIFIED = 0

        # Response media type is audio.
        AUDIO = 1
      end
    end

    # Browse Carousel Card for Actions on Google.
    # https://developers.google.com/actions/assistant/responses#browsing_carousel
    # @!attribute [rw] items
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem>]
    #     Required. List of items in the Browse Carousel Card. Minimum of two
    #     items, maximum of ten.
    # @!attribute [rw] image_display_options
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::ImageDisplayOptions]
    #     Optional. Settings for displaying the image. Applies to every image in
    #     {::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard#items items}.
    class BrowseCarouselCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Browsing carousel tile
      # @!attribute [rw] open_uri_action
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction]
      #     Required. Action to present to the user.
      # @!attribute [rw] title
      #   @return [::String]
      #     Required. Title of the carousel item. Maximum of two lines of text.
      # @!attribute [rw] description
      #   @return [::String]
      #     Optional. Description of the carousel item. Maximum of four lines of
      #     text.
      # @!attribute [rw] image
      #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
      #     Optional. Hero image for the carousel item.
      # @!attribute [rw] footer
      #   @return [::String]
      #     Optional. Text that appears at the bottom of the Browse Carousel
      #     Card. Maximum of one line of text.
      class BrowseCarouselCardItem
        include ::Google::Protobuf::MessageExts
        extend ::Google::Protobuf::MessageExts::ClassMethods

        # Actions on Google action to open a given url.
        # @!attribute [rw] url
        #   @return [::String]
        #     Required. URL
        # @!attribute [rw] url_type_hint
        #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::BrowseCarouselCard::BrowseCarouselCardItem::OpenUrlAction::UrlTypeHint]
        #     Optional. Specifies the type of viewer that is used when opening
        #     the URL. Defaults to opening via web browser.
        class OpenUrlAction
          include ::Google::Protobuf::MessageExts
          extend ::Google::Protobuf::MessageExts::ClassMethods

          # Type of the URI.
          module UrlTypeHint
            # Unspecified
            URL_TYPE_HINT_UNSPECIFIED = 0

            # Url would be an amp action
            AMP_ACTION = 1

            # URL that points directly to AMP content, or to a canonical URL
            # which refers to AMP content via <link rel="amphtml">.
            AMP_CONTENT = 2
          end
        end
      end

      # Image display options for Actions on Google. This should be used for
      # when the image's aspect ratio does not match the image container's
      # aspect ratio.
      module ImageDisplayOptions
        # Fill the gaps between the image and the image container with gray
        # bars.
        IMAGE_DISPLAY_OPTIONS_UNSPECIFIED = 0

        # Fill the gaps between the image and the image container with gray
        # bars.
        GRAY = 1

        # Fill the gaps between the image and the image container with white
        # bars.
        WHITE = 2

        # Image is scaled such that the image width and height match or exceed
        # the container dimensions. This may crop the top and bottom of the
        # image if the scaled image height is greater than the container
        # height, or crop the left and right of the image if the scaled image
        # width is greater than the container width. This is similar to "Zoom
        # Mode" on a widescreen TV when playing a 4:3 video.
        CROPPED = 3

        # Pad the gaps between image and image frame with a blurred copy of the
        # same image.
        BLURRED_BACKGROUND = 4
      end
    end

    # Table card for Actions on Google.
    # @!attribute [rw] title
    #   @return [::String]
    #     Required. Title of the card.
    # @!attribute [rw] subtitle
    #   @return [::String]
    #     Optional. Subtitle to the title.
    # @!attribute [rw] image
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::Image]
    #     Optional. Image which should be displayed on the card.
    # @!attribute [rw] column_properties
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties>]
    #     Optional. Display properties for the columns in this table.
    # @!attribute [rw] rows
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow>]
    #     Optional. Rows in this table of data.
    # @!attribute [rw] buttons
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::BasicCard::Button>]
    #     Optional. List of buttons for the card.
    class TableCard
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Column properties for
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] header
    #   @return [::String]
    #     Required. Column heading.
    # @!attribute [rw] horizontal_alignment
    #   @return [::Google::Cloud::Dialogflow::V2::Intent::Message::ColumnProperties::HorizontalAlignment]
    #     Optional. Defines text alignment for all cells in this column.
    class ColumnProperties
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods

      # Text alignments within a cell.
      module HorizontalAlignment
        # Text is aligned to the leading edge of the column.
        HORIZONTAL_ALIGNMENT_UNSPECIFIED = 0

        # Text is aligned to the leading edge of the column.
        LEADING = 1

        # Text is centered in the column.
        CENTER = 2

        # Text is aligned to the trailing edge of the column.
        TRAILING = 3
      end
    end

    # Row of {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCard TableCard}.
    # @!attribute [rw] cells
    #   @return [::Array<::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardCell>]
    #     Optional. List of cells that make up this row.
    # @!attribute [rw] divider_after
    #   @return [::Boolean]
    #     Optional. Whether to add a visual divider after this row.
    class TableCardRow
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # Cell of
    # {::Google::Cloud::Dialogflow::V2::Intent::Message::TableCardRow TableCardRow}.
    # @!attribute [rw] text
    #   @return [::String]
    #     Required. Text in this cell.
    class TableCardCell
      include ::Google::Protobuf::MessageExts
      extend ::Google::Protobuf::MessageExts::ClassMethods
    end

    # The rich response message integration platform. See
    # [Integrations](https://cloud.google.com/dialogflow/docs/integrations).
    module Platform
      # Default platform.
      PLATFORM_UNSPECIFIED = 0

      # Facebook.
      FACEBOOK = 1

      # Slack.
      SLACK = 2

      # Telegram.
      TELEGRAM = 3

      # Kik.
      KIK = 4

      # Skype.
      SKYPE = 5

      # Line.
      LINE = 6

      # Viber.
      VIBER = 7

      # Google Assistant
      # See [Dialogflow webhook
      # format](https://developers.google.com/assistant/actions/build/json/dialogflow-webhook-json)
      ACTIONS_ON_GOOGLE = 8

      # Google Hangouts.
      GOOGLE_HANGOUTS = 11
    end
  end

  # Represents a single followup intent in the chain.
  # @!attribute [rw] followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  # @!attribute [rw] parent_followup_intent_name
  #   @return [::String]
  #     The unique identifier of the followup intent's parent.
  #     Format: `projects/<Project ID>/agent/intents/<Intent ID>`.
  class FollowupIntentInfo
    include ::Google::Protobuf::MessageExts
    extend ::Google::Protobuf::MessageExts::ClassMethods
  end

  # Represents the different states that webhooks can be in.
  module WebhookState
    # Webhook is disabled in the agent and in the intent.
    WEBHOOK_STATE_UNSPECIFIED = 0

    # Webhook is enabled in the agent and in the intent.
    WEBHOOK_STATE_ENABLED = 1

    # Webhook is enabled in the agent and in the intent. Also, each slot
    # filling prompt is forwarded to the webhook.
    WEBHOOK_STATE_ENABLED_FOR_SLOT_FILLING = 2
  end
end