if (this.getPropertyBag().isPropertyUpdated(AppointmentSchema.Start) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.End) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.IsAllDayEvent) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.Recurrence)) {
if (this.getPropertyBag().isPropertyUpdated(AppointmentSchema.Start) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.End) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.IsAllDayEvent) || this.getPropertyBag().isPropertyUpdated(AppointmentSchema.Recurrence)) {