Returns the value of this value as a hash. Most values don't have hash representations, but [Map]s and empty [List]s do.
Returns:
This value as a hash
Raises:
if this value doesn't have a hash representation
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# File 'lib/sass/script/value/base.rb', line 214 def to_h raise Sass::SyntaxError.new("#{inspect} is not a map.") end