code: function TR(options, items) {
      options = options || {};
  
      this.title = options.title || '';
      this.link = options.link || '';
      this.description = options.description || '';
      this.language = options.language || 'ru';
  
      this.items = items || [];
  
      this.item = function (data) {
          data = data || {};
          this.items.push(itemData(data));
          return this;
      };
  
      this.xml = function () {
          return xml(generateXML(this));
      };
  }
docs: Base function
  @param options
  @param items
  @constructor