rem: throw new Components.Exception( "proxy has different id than its parent!"); 
add: throw new Components.Exception("proxy has different id than its parent!"); 
context: function isParent(item) {    if (item.id != item.parentItem.id) {        throw new Components.Exception(            "proxy has different id than its parent!");    }    return (!item.recurrenceId);}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/64fa0031c18ffbcccb6d772168cab3b330d991f6/calWcapUtils.js/buggy/calendar/providers/wcap/calWcapUtils.js