class ActiveModelSerializers::Adapter::JsonApi::Meta

def initialize(serializer)
  @object = serializer.object
  @scope = serializer.scope
  # Use the return value of the block unless it is nil.
  if serializer._meta.respond_to?(:call)
    @value = instance_eval(&serializer._meta)
  else
    @value = serializer._meta
  end
end