How to use the gmqtt.client.Message function in gmqtt

def publish(self, message_or_topic, payload=None, qos=0, retain=False, **kwargs):
        if isinstance(message_or_topic, Message):
            message = message_or_topic
        else:
            message = Message(message_or_topic, payload, qos=qos, retain=retain, **kwargs)

        mid, package = self._connection.publish(message)

        if qos > 0:
            self._persistent_storage.push_message_nowait(mid, package)

def publish(self, message_or_topic, payload=None, qos=0, retain=False, **kwargs):
        if isinstance(message_or_topic, Message):
            message = message_or_topic
        else:
            message = Message(message_or_topic, payload, qos=qos, retain=retain, **kwargs)

        mid, package = self._connection.publish(message)

        if qos > 0:
            self._persistent_storage.push_message_nowait(mid, package)