code: def unsubscribe(self, jid, node=None, *,
                      subscription_jid=None,
                      subid=None):
          
  
          subscription_jid = subscription_jid or self.client.local_jid.bare()
  
          iq = aioxmpp.stanza.IQ(to=jid, type_=aioxmpp.structs.IQType.SET)
          iq.payload = pubsub_xso.Request(
              pubsub_xso.Unsubscribe(subscription_jid, node=node, subid=subid)
          )
  
          yield from self.client.send(iq)
docs: Unsubscribe from a node.
  
          :param jid: Address of the PubSub service.
          :type jid: :class:`aioxmpp.JID`
          :param node: Name of the PubSub node to unsubscribe from.
          :type node: :class:`str`
          :param subscription_jid: The address to subscribe from the service.
          :type subscription_jid: :class:`aioxmpp.JID`
          :param subid: Unique ID of the subscription to remove.
          :type subid: :class:`str`
          :raises aioxmpp.errors.XMPPError: as returned by the service
  
          By default, the unsubscribe request will be for the bare JID of the
          client. It can be specified explicitly using the `subscription_jid`
          argument.
  
          If available, the `subid` should also be specified.
  
          If an error occurs, the corresponding :class:`~.errors.XMPPError` is
          raised.