rem: var tzid = this.getCalProp("X-NSCP-CALPROPS-TZID"); 
add: var tzid = this.getCalendarProperties("X-NSCP-CALPROPS-TZID", "", {}); 
context:     get defaultTimezone() {        var tzid = this.getCalProp("X-NSCP-CALPROPS-TZID");        if (tzid.length < 1) {            return "UTC"; // fallback        }        return tzid[0];    },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/99eaaaada9e6f5f2a2f7fac9237c6e41ecf1eef7/calWcapCalendar.js/buggy/calendar/providers/wcap/calWcapCalendar.js