code: def start(self):
          
          super().start()
          inbox_thread = BotThread(name='{}-inbox-stream-thread'.format(self._name),
                                   target=self._listen_inbox_messages)
          inbox_thread.start()
          self._threads.append(inbox_thread)
          self.log.info('Starting inbox stream ...')
docs: Starts this bot in a separate thread. Therefore, this call is non-blocking.
  
          It will listen to all new inbox messages created.