'Creates the object to store the next batch.
Args:
fetch_options: The datastore_query.FetchOptions passed in by the user or
None.
Returns:
A tuple containing the fetch options that should be used internally and
the object that should be used to contain the next batch.'

def _make_next_batch(self, fetch_options):

    return (fetch_options, Batch(self._batch_shared, start_cursor=self.__end_cursor))
