rem: return (key in this.object); 
add: return (key in this.obj); 
context: 	hasKey: function(key){		return (key in this.object);	},
meta: 7826	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7826/91c94c57e656870f49ffd11ba4153c75022f94b8/Hash.js/buggy/Plugins/Hash.js