docs: def get_items(self, assessment_taken_id):
          """Gets the items questioned in a assessment.
  
          arg:    assessment_taken_id (osid.id.Id): ``Id`` of the
                  ``AssessmentTaken``
          return: (osid.assessment.ItemList) - the list of assessment
                  questions
          raise:  NotFound - ``assessment_taken_id`` is not found
          raise:  NullArgument - ``assessment_taken_id`` is ``null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure occurred
          *compliance: mandatory -- This method must be implemented.*
  
          """
          mgr = self._get_provider_manager('ASSESSMENT', local=True)
          taken_lookup_session = mgr.get_assessment_taken_lookup_session(proxy=self._proxy)
          taken_lookup_session.use_federated_bank_view()
          taken = taken_lookup_session.get_assessment_taken(assessment_taken_id)
          ils = get_item_lookup_session(runtime=self._runtime, proxy=self._proxy)
          ils.use_federated_bank_view()
          item_list = []
          if 'sections' in taken._my_map:
              for section_id in taken._my_map['sections']:
                  section = get_assessment_section(Id(section_id),
                                                   runtime=self._runtime,
                                                   proxy=self._proxy)
                  for question in section._my_map['questions']:
                      item_list.append(ils.get_item(Id(question['questionId'])))
          return ItemList(item_list)