docs: @Override
      protected void initPrototypeId(int id)
      {
          String s;
          int arity;
          switch (id) {
            case Id_defaultSettings:  arity=0; s="defaultSettings";  break;
            case Id_settings:         arity=0; s="settings";         break;
            case Id_setSettings:      arity=1; s="setSettings";      break;
            default: throw new IllegalArgumentException(String.valueOf(id));
          }
          initPrototypeMethod(XMLCTOR_TAG, id, s, arity);
      }