rem: this.mStampDate.makeImmutable(); 
context:     makeImmutable: function () {        this.mStartDate.makeImmutable();        this.mEndDate.makeImmutable();        this.mStampDate.makeImmutable();        this.makeItemBaseImmutable();    },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/b002b50405b8e9e7d488725753081cc8335d6343/calEvent.js/buggy/calendar/base/src/calEvent.js