code: def retract(self, jid, node, id_, *, notify=False):
          
          retract = pubsub_xso.Retract()
          retract.node = node
          item = pubsub_xso.Item()
          item.id_ = id_
          retract.item = item
          retract.notify = notify
  
          iq = aioxmpp.stanza.IQ(to=jid, type_=aioxmpp.structs.IQType.SET)
          iq.payload = pubsub_xso.Request(
              retract
          )
  
          yield from self.client.send(iq)
docs: Retract a previously published item from a node.
  
          :param jid: Address of the PubSub service.
          :type jid: :class:`aioxmpp.JID`
          :param node: Name of the PubSub node to send a notify from.
          :type node: :class:`str`
          :param id_: The ID of the item to retract.
          :type id_: :class:`str`
          :param notify: Flag indicating whether subscribers shall be notified
              about the retraction.
          :type notify: :class:`bool`
          :raises aioxmpp.errors.XMPPError: as returned by the service
  
          Retract an item previously published to `node` at `jid`. `id_` must be
          the ItemID of the item to retract.
  
          If `notify` is set to true, notifications will be generated (by setting
          the `notify` attribute on the retraction request).