def get_assessment_authoring_manager(self):
raise Unimplemented()<EOL>
Gets an ``AssessmentAuthoringManager``.

        return: (osid.assessment.authoring.AssessmentAuthoringManager) -
                an ``AssessmentAuthoringManager``
        raise:  OperationFailed - unable to complete request
        raise:  Unimplemented - ``supports_assessment_authoring() is
                false``
        *compliance: optional -- This method must be implemented if
        ``supports_assessment_authoring()`` is true.*