code: def stop(self):
          
          LOGGER.debug("zeromq.Driver.stop")
          for publisher in self.publishers_registry:
              publisher.stop()
          self.publishers_registry.clear()
          for subscriber in self.subscribers_registry:
              if subscriber.is_started:
                  subscriber.stop()
          self.subscribers_registry.clear()
          # pykka.ActorRegistry.stop_all()
          return self
docs: Stop ZMQ tools.
          :return: self