docs: function () {
              if (!this.eventsAlreadyAttached) {
                  this.body = Aria.$window.document.body;
                  var map = this._getInitialListenersList();
                  for (var i = 0; i < map.length; i++) {
                      this._addListener(map[i].evt, map[i].cb);
                  }
                  this.eventsAlreadyAttached = true;
              }
          }