code: function (translationId, interpolateParams) {
          // If we have a handler factory - we might also call it here to determine if it provides
          // a default text for a translationid that can't be found anywhere in our tables
          if ($missingTranslationHandlerFactory) {
            var resultString = $injector.get($missingTranslationHandlerFactory)(translationId, $uses, interpolateParams);
            if (resultString !== undefined) {
              return resultString;
            } else {
              return translationId;
            }
          } else {
            return translationId;
          }
        }
docs: @name translateByHandler
  @private
  
  Translate by missing translation handler.
  
  @param translationId
  @returns translation created by $missingTranslationHandler or translationId is $missingTranslationHandler is
  absent