code: AddIfStandalone addIfStandalone(Object... objects) {
      if (addIfStandalone == null) {
        addIfStandalone = new AddIfStandalone(getWebServer().isStandalone());
      }
      addIfStandalone.ifAdd(objects);
      return addIfStandalone;
    }
docs: Add a component to container only if this is a standalone instance, without clustering.
  
  @throws IllegalStateException if called from PlatformLevel1, when cluster settings are not loaded