rem: return this.getCalendarByCalId(this.userId); 
add: return this.getCalendarByCalId(null); 
context:     get defaultCalendar() {        return this.getCalendarByCalId(this.userId);    },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/d0783c2a7f4986ac26bbebbd18a545d31b526836/calWcapSession.js/buggy/calendar/providers/wcap/calWcapSession.js