def get_rubric_query(self):
raise errors.Unimplemented()<EOL>
Gets the query for a rubric assessment.

        Multiple retrievals produce a nested ``OR`` term.

        return: (osid.assessment.AssessmentOfferedQuery) - the
                assessment offered query
        raise:  Unimplemented - ``supports_rubric_query()`` is ``false``
        *compliance: optional -- This method must be implemented if
        ``supports_rubric_query()`` is ``true``.*