def receive_message(self, message, data):
        """ Called when a receiver-message has been received. """
        if data[MESSAGE_TYPE] == TYPE_RECEIVER_STATUS:
            self._process_get_status(data)

            return True

        elif data[MESSAGE_TYPE] == TYPE_LAUNCH_ERROR:
            self._process_launch_error(data)

            return True

        return False
Called when a receiver-message has been received.