add:  var composite = getCompositeCalendar(); composite.addCalendar(homeCalendar);  
context: function getCalendarManager(){    if (!activeCalendarManager) {        activeCalendarManager = ltnGetService("@mozilla.org/calendar/manager;1",                                              "calICalendarManager");        activeCalendarManager.addObserver(ltnCalendarManagerObserver);    }    if (activeCalendarManager.getCalendars({}).length == 0) {        var homeCalendar = activeCalendarManager.createCalendar("storage", makeURL("moz-profile-calendar://"));        activeCalendarManager.registerCalendar(homeCalendar);        homeCalendar.name = "Home";    }    return activeCalendarManager;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/5e5d03888240708b4294323ba30c4be40c607f05/calendar-management.js/clean/calendar/lightning/content/calendar-management.js