code: def start(self):
          
          super().start()
          submissions_thread = BotThread(name='{}-submissions-stream-thread'.format(self._name),
                                         target=self._listen_submissions)
          submissions_thread.start()
          self._threads.append(submissions_thread)
          self.log.info('Starting submissions stream ...')
docs: Starts this bot in a separate thread. Therefore, this call is non-blocking.
  
          It will listen to all new submissions created in the :attr:`~subreddits` list.