docs: function () {
              var domElt = this.getDom();
              var content = (this._cfg.label && this._cfg.waiAria) ? aria.utils.Dom.getDomElementChild(domElt, 1) : aria.utils.Dom.getDomElementChild(domElt, 0);
              this._frame.linkToDom(content);
              this.$Container._init.call(this);
          }