@abc.abstractmethod<EOL><INDENT>def get_gradebook_record(self, gradebook_record_type):<DEDENT>
return<EOL>
Gets the gradebook record corresponding to the given ``Gradebook`` record ``Type``.

        This method is used to retrieve an object implementing the
        requested record. The ``gradebook_record_type`` may be the
        ``Type`` returned in ``get_record_types()`` or any of its
        parents in a ``Type`` hierarchy where
        ``has_record_type(gradebook_record_type)`` is ``true`` .

        :param gradebook_record_type: a gradebook record type
        :type gradebook_record_type: ``osid.type.Type``
        :return: the gradebook record
        :rtype: ``osid.grading.records.GradebookRecord``
        :raise: ``NullArgument`` -- ``gradebook_record_type`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``Unsupported`` -- ``has_record_type(gradebook_record_type)`` is ``false``

        *compliance: mandatory -- This method must be implemented.*