code: function(){
      if (this.options.placeholder) return this.options.placeholder;
      if (this.options.language){
        var firstLanguage = this.options.language.split(",")[0];
        var language = subtag.language(firstLanguage);
        var localizedValue = localization.placeholder[language];
        if (localizedValue)  return localizedValue;
      }
      return 'Search';
    }
docs: Get the text to use as the search bar placeholder
  
  If placeholder is provided in options, then use options.placeholder
  Otherwise, if language is provided in options, then use the localized string of the first language if available
  Otherwise use the default
  
  @returns {String} the value to use as the search bar placeholder
  @private