{
ARTISTS => {:type => ::Thrift::Types::LIST, :name => 'artists', :element => {:type => ::Thrift::Types::STRUCT, :class => ::WiMP::Gen::Artist}, :optional => true},
TRACKS => {:type => ::Thrift::Types::LIST, :name => 'tracks', :element => {:type => ::Thrift::Types::STRUCT, :class => ::WiMP::Gen::Track}, :optional => true},
ALBUMS => {:type => ::Thrift::Types::LIST, :name => 'albums', :element => {:type => ::Thrift::Types::STRUCT, :class => ::WiMP::Gen::Album}, :optional => true},
PLAYLIST => {:type => ::Thrift::Types::LIST, :name => 'playlist', :element => {:type => ::Thrift::Types::STRUCT, :class => ::WiMP::Gen::Playlist}, :optional => true}
}