docs: function (out) {
              if (this._cfgOk) {
                  this._domId = this._createDynamicId();
                  var tagName = this._cfg.type;
                  var markup = ['<', tagName, ' id="', this._domId, '"'];
                  if (this._cfg.attributes) {
                      markup.push(' ' + ariaUtilsHtml.buildAttributeList(this._cfg.attributes));
                  }
                  markup.push('></' + tagName + '>');
                  out.write(markup.join(''));
              }
          }