@abc.abstractmethod<EOL><INDENT>def get_learning_batch_manager(self):<DEDENT>
return<EOL>
Gets a ``LearningBatchManager``.

        :return: a ``LearningBatchManager``
        :rtype: ``osid.learning.batch.LearningBatchManager``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unimplemented`` -- ``supports_learning_batch() is false``

        *compliance: optional -- This method must be implemented if
        ``supports_learning_batch()`` is true.*