code: def change_pass(self,
                      new_pass):
          
          iq = aioxmpp.IQ(
              to=self.client.local_jid.bare().replace(localpart=None),
              type_=aioxmpp.IQType.SET,
              payload=xso.Query(self.client.local_jid.localpart, new_pass)
          )
  
          yield from self.client.send(iq)
docs: Change the client password for 'new_pass'.
  
          :param new_pass: New password of the client.
          :type new_pass: :class:`str`
  
          :param old_pass: Old password of the client.
          :type old_pass: :class:`str`