code: async def _handle_ack(self, message):
          
          ack = message.obj
          self._log.debug('Handling acknowledge for %s', str(ack.msg_ids))
          for msg_id in ack.msg_ids:
              state = self._pending_state.get(msg_id)
              if state and isinstance(state.request, LogOutRequest):
                  del self._pending_state[msg_id]
                  state.future.set_result(True)
docs: Handles a server acknowledge about our messages. Normally
          these can be ignored except in the case of ``auth.logOut``:
  
              auth.logOut#5717da40 = Bool;
  
          Telegram doesn't seem to send its result so we need to confirm
          it manually. No other request is known to have this behaviour.
  
          Since the ID of sent messages consisting of a container is
          never returned (unless on a bad notification), this method
          also removes containers messages when any of their inner
          messages are acknowledged.