public void addDefaultRootHandler() {
        Handler handler = new Handler(
                new ComponentModel(BundleInstantiationSpecification.fromStrings(
                        BINDINGS_OVERVIEW_HANDLER_CLASS, null, null), null));  // null bundle, as the handler is in container-disc
        handler.addServerBindings(ROOT_HANDLER_BINDING);
        addComponent(handler);
    }
The zone this is deployed in, or the default zone if not on hosted Vespa
config-model/src/main/java/com/yahoo/vespa/model/container/ContainerCluster.java