rem: if (!this.isEnabled()) return; 
add: if (!this._enabled) return; 
context:     _buttonClickListener: function(event) {        if (!this.isEnabled()) return;                if (!this._ddComp.isVisible()) {            this.setDropDownVisible(true);        } else {            this.setDropDownVisible(false);        }    },
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/d532c0ea03ef1c91856bba5408f049541b39c2ba/DropDown.js/buggy/src/thinwire/render/web/resources/DropDown.js