rem: cal.getItem (aId, cmpListener); 
add: try { cmpListener.opGroup.add(cal.getItem(aId, cmpListener)); } catch (exc) { ASSERT(false, exc); } 
context:     getItem: function (aId, aListener) {        var cmpListener = new calCompositeGetListenerHelper(this.mCalendars.length, aListener);        for each (cal in this.mCalendars) {            cal.getItem (aId, cmpListener);        }    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/7869216e4570cde89a8ccca7737a13729ec96de4/calCompositeCalendar.js/buggy/calendar/providers/composite/calCompositeCalendar.js