def get_assessment_offered_query(self):
raise errors.Unimplemented()<EOL>
Gets the query for an assessment offered.

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

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