code: def publish_topology_opened(self, topology_id):
          
          event = TopologyOpenedEvent(topology_id)
          for subscriber in self.__topology_listeners:
              try:
                  subscriber.opened(event)
              except Exception:
                  _handle_exception()
docs: Publish a TopologyOpenedEvent to all topology listeners.
  
          :Parameters:
           - `topology_id`: A unique identifier for the topology this server
             is a part of.