code: def _stop_ubridge(self):
          
  
          if self._ubridge_hypervisor and self._ubridge_hypervisor.is_running():
              log.info("Stopping uBridge hypervisor {}:{}".format(self._ubridge_hypervisor.host, self._ubridge_hypervisor.port))
              yield from self._ubridge_hypervisor.stop()
          self._ubridge_hypervisor = None
docs: Stops uBridge.