}, Tab: function() {
                var t3, e2;
                return ((t3 = this.responder) != null ? t3.canIncreaseNestingLevel() : void 0) ? (this.event.preventDefault(), (e2 = this.responder) != null && e2.increaseNestingLevel(), this.render()) : void 0;
              }, "Tab+Shift": function() {