public boolean owns( Node.UniqueIdentifier nodeIdentifier )
        {
            return this.equals( nodeIdentifier.getServiceIdentifier() );
        }
A unique identifier for an item, in context of all nodes of all services in the system.

The property that uniquely identifies a service within the system is its serviceId.
xmppserver/src/main/java/org/jivesoftware/openfire/pubsub/PubSubService.java