def __call__(self, parent, *args, **kwargs):
        """
        Perform the action's request operation after building operation
        parameters and build any defined resources from the response.

        :type parent: :py:class:`~boto3.resources.base.ServiceResource`
        :param parent: The resource instance to which this action is attached.
        :rtype: dict or ServiceResource or list(ServiceResource)
        :return: The response, either as a raw dict or resource instance(s).
        """
        operation_name = xform_name(self._action_model.request.operation)

        # First, build predefined params and then update with the
        # user-supplied kwargs, which allows overriding the pre-built
        # params if needed.
        params = create_request_parameters(parent, self._action_model.request)
        params.update(kwargs)

        logger.debug(
            'Calling %s:%s with %r',
            parent.meta.service_name,
            operation_name,
            params,
        )

        response = getattr(parent.meta.client, operation_name)(*args, **params)

        logger.debug('Response: %r', response)

        return self._response_handler(parent, params, response)

        Perform the action's request operation after building operation
        parameters and build any defined resources from the response.

        :type parent: :py:class:`~boto3.resources.base.ServiceResource`
        :param parent: The resource instance to which this action is attached.
        :rtype: dict or ServiceResource or list(ServiceResource)
        :return: The response, either as a raw dict or resource instance(s).
        
boto3/resources/action.py