docs: function (propertyName) {
          if (!ariaUtilsType.isString(propertyName)) {
              return true;
          }
  
          // which property names are included for back references
          return (propertyName != jsonUtils.OBJECT_PARENT_PROPERTY &&
              propertyName.substr(0, jsonUtils.META_FOR_LISTENERS.length) != jsonUtils.META_FOR_LISTENERS &&
              propertyName.substr(0, jsonUtils.META_FOR_RECLISTENERS.length) != jsonUtils.META_FOR_RECLISTENERS);
      }