rem: aNewItem.calendar.modifyItem (aNewItem, aOldItem, aListener); 
add: return aNewItem.calendar.modifyItem(aNewItem, aOldItem, aListener); 
context:     modifyItem: function (aNewItem, aOldItem, aListener) {        if (aNewItem.calendar == null) {            // XXX Can't modify item with NULL parent            throw Components.results.NS_ERROR_FAILURE;        }        aNewItem.calendar.modifyItem (aNewItem, aOldItem, aListener);    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/9421/7869216e4570cde89a8ccca7737a13729ec96de4/calCompositeCalendar.js/buggy/calendar/providers/composite/calCompositeCalendar.js