resource_class ||= arvados_api_client.
kind_class(self.uuid_infix_object_kind[re[1]])
end
if opts[:referring_object] and
opts[:referring_attr] and
resource_class ||= arvados_api_client.
kind_class(self.uuid_infix_object_kind[re[1]])
end
if opts[:referring_object] and
opts[:referring_attr] and