def get_commenting_batch_manager(self):
raise Unimplemented()<EOL>
Gets a ``CommentingBatchManager``.

        return: (osid.commenting.batch.CommentingBatchManager) - a
                ``CommentingBatchManager``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_commenting_batch()`` is
                ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_commenting_batch()`` is ``true``.*