rem: } 
add: }, 
context:     deleteProperty: function (aName) {        if (this.mImmutable)            throw Components.results.NS_ERROR_FAILURE;        this.mProperties.deleteProperty(aName);    }
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/c2768a9ef27c347866d48f1727752b59043532b5/calItemBase.js/buggy/calendar/base/src/calItemBase.js