class ActiveModelSerializers::Adapter::JsonApi::ResourceIdentifier

def initialize(serializer, options)

{http://jsonapi.org/format/#document-resource-identifier-objects Resource Identifier Objects}
def initialize(serializer, options)
  @id   = id_for(serializer)
  @type = JsonApi.send(:transform_key_casing!, type_for(serializer),
    options)
end