rem: get readOnly() { throw Components.results.NS_ERROR_NOT_IMPLEMENTED; 
add: get canRefresh() { return true; 
context:     get readOnly() {         throw Components.results.NS_ERROR_NOT_IMPLEMENTED;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/2b17818e02f0b9e45da9ae8b53baad3eb4059173/calCompositeCalendar.js/buggy/calendar/providers/composite/calCompositeCalendar.js