code: def _listen_commands(self):
          
  
          self._last_update = None
          update_body = {'timeout': 2}
  
          while True:
              latest = self._last_update
              # increase offset to filter out older updates
              update_body.update({'offset': latest + 1} if latest else {})
              update_resp = self.client.get_updates(update_body)
              update_resp.add_done_callback(self._respond_commands)
              yield gen.sleep(5)
docs: Monitor new updates and send them further to
          self._respond_commands, where bot actions
          are decided.