code: function (fallbackLanguageIndex, translationId, interpolateParams, Interpolator) {
          var result;
  
          if (fallbackLanguageIndex < $fallbackLanguage.length) {
            var langKey = $fallbackLanguage[fallbackLanguageIndex];
            result = getFallbackTranslationInstant(langKey, translationId, interpolateParams, Interpolator);
            if (!result) {
              result = resolveForFallbackLanguageInstant(fallbackLanguageIndex + 1, translationId, interpolateParams, Interpolator);
            }
          }
          return result;
        }
docs: @name resolveForFallbackLanguageInstant
  @private
  
  Recursive helper function for fallbackTranslation that will sequentially look
  for a translation in the fallbackLanguages starting with fallbackLanguageIndex.
  
  @param fallbackLanguageIndex
  @param translationId
  @param interpolateParams
  @param Interpolator
  @returns {string} translation