gbaseAttributes.addDateTimeRangeAttribute("event date range",
new DateTimeRange(startDateTime, endDateTime));
gbaseAttributes.addTextAttribute("event performer", "Google mashup test");
gbaseAttributes.addUrlAttribute("performer url", "http://code.google.com/apis/gdata.html");
if (event.getBaseUrl() != null) {
// updating event
baseService.update(event.getBaseUrl(), entry);
} else {