@Override
        protected Slobrok doBuild(DeployState deployState, TreeConfigProducer<AnyConfigProducer> parent, Element spec) {
            return new Slobrok(parent, i, deployState.featureFlags());
        }
Fallback when no config server is specified
config-model/src/main/java/com/yahoo/vespa/model/builder/xml/dom/DomAdminV2Builder.java