code: static void initializeAutoTaggingAndResubscription(Object target, ObservableGroup group) {
      Class<?> cls = target.getClass();
      String clsName = cls.getName();
      while (cls != null && !clsName.startsWith("android.") && !clsName.startsWith("java.")) {
        initializeAutoTaggingAndResubscriptionInTargetClassOnly(target, cls, group);
        cls = cls.getSuperclass();
        if (cls != null) {
          clsName = cls.getName();
        }
      }
    }
docs: Initializes all helper classes in {@code target} class hierarchy.