rem: set uri(v) { throw Components.results.NS_ERROR_NOT_IMPLEMENTED; 
add: set readOnly(bool) {  getCalendarManager().setCalendarPref(this, "READONLY", bool); 
context:     set uri(v) {        throw Components.results.NS_ERROR_NOT_IMPLEMENTED;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/10aa71fd0bd91b8cabbafaa5c1a8ab2ea0f210dc/calCompositeCalendar.js/buggy/calendar/providers/composite/calCompositeCalendar.js