public final com.yahoo.vdslib.state.Node getNode() {
            return new com.yahoo.vdslib.state.Node(getService(), id);
        }
Looks bad with name overlap here, but everywhere else Node will have to be
referred to as Id.Node, so users won't get conflicts.
clustercontroller-core/src/main/java/com/yahoo/vespa/clustercontroller/core/restapiv2/Id.java