@classmethod<EOL><INDENT>@utils.positional(<NUM_LIT:3>)<EOL>def _get_by_id_async(cls, id, parent=None, app=None, namespace=None,<EOL>**ctx_options):<DEDENT>
key = Key(cls._get_kind(), id, parent=parent, app=app, namespace=namespace)<EOL>return key.get_async(**ctx_options)<EOL>
Returns an instance of Model class by ID (and app, namespace).

        This is the asynchronous version of Model._get_by_id().