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

def subscribe(self, subscription_or_topic, qos=0, no_local=False, retain_as_published=False,
                  retain_handling_options=0, **kwargs):
        if isinstance(subscription_or_topic, Subscription):
            subscription = subscription_or_topic
        elif isinstance(subscription_or_topic, (tuple, list)):
            subscription = subscription_or_topic
        elif isinstance(subscription_or_topic, str):
            subscription = Subscription(subscription_or_topic, qos=qos, no_local=no_local,
                                        retain_as_published=retain_as_published,
                                        retain_handling_options=retain_handling_options)
        else:
            raise ValueError('Bad subscription: must be string or Subscription or list of Subscriptions')
        return self._connection.subscribe(subscription, **kwargs)

def subscribe(self, subscription_or_topic, qos=0, no_local=False, retain_as_published=False,
                  retain_handling_options=0, **kwargs):
        if isinstance(subscription_or_topic, Subscription):
            subscription = subscription_or_topic
        elif isinstance(subscription_or_topic, (tuple, list)):
            subscription = subscription_or_topic
        elif isinstance(subscription_or_topic, str):
            subscription = Subscription(subscription_or_topic, qos=qos, no_local=no_local,
                                        retain_as_published=retain_as_published,
                                        retain_handling_options=retain_handling_options)
        else:
            raise ValueError('Bad subscription: must be string or Subscription or list of Subscriptions')
        return self._connection.subscribe(subscription, **kwargs)