code: def _mock_request(self, **kwargs):
          
          model = kwargs.get('model')
          service = model.service_model.endpoint_prefix
          operation = model.name
          LOG.debug('_make_request: %s.%s', service, operation)
          return self.load_response(service, operation)
docs: A mocked out make_request call that bypasses all network calls
          and simply returns any mocked responses defined.