code: def get_response(self, assessment_section_id, item_id):
          
          return self.get_assessment_section(assessment_section_id).get_response(question_id=item_id)
docs: Gets the submitted response to the associated item.
  
          arg:    assessment_section_id (osid.id.Id): ``Id`` of the
                  ``AssessmentSection``
          arg:    item_id (osid.id.Id): ``Id`` of the ``Item``
          return: (osid.assessment.Response) - the response
          raise:  IllegalState - ``has_assessment_section_begun()`` is
                  ``false or is_assessment_section_over()`` is ``true``
          raise:  NotFound - ``assessment_section_id or item_id is not
                  found, or item_id not part of assessment_section_id``
          raise:  NullArgument - ``assessment_section_id or item_id is
                  null``
          raise:  OperationFailed - unable to complete request
          raise:  PermissionDenied - authorization failure
          *compliance: mandatory -- This method must be implemented.*