code: def get_assessment_offered_lookup_session(self):
          
          if not self.supports_assessment_offered_lookup():
              raise errors.Unimplemented()
          # pylint: disable=no-member
          return sessions.AssessmentOfferedLookupSession(runtime=self._runtime)
docs: Gets the ``OsidSession`` associated with the assessment offered lookup service.
  
          return: (osid.assessment.AssessmentOfferedLookupSession) - an
                  ``AssessmentOfferedLookupSession``
          raise:  OperationFailed - unable to complete request
          raise:  Unimplemented - ``supports_assessment_offered_lookup()``
                  is ``false``
          *compliance: optional -- This method must be implemented if
          ``supports_assessment_offered_lookup()`` is ``true``.*