protected override void InternalSetValue(PropertyBag.BasicPropertyStore propertyBag, object value)
 {
     StartTimeProperty.SetCalendarTime(propertyBag, InternalSchema.MapiEndTime, InternalSchema.MapiPREndDate, InternalSchema.TimeZoneDefinitionEnd, true, value);
     EndTimeProperty.DenormalizeTimeProperty(propertyBag, (ExDateTime)propertyBag.GetValue(InternalSchema.MapiEndTime), InternalSchema.MapiEndTime, InternalSchema.MapiPREndDate);
 }
 protected override void InternalSetValue(PropertyBag.BasicPropertyStore propertyBag, object value)
 {
     StartTimeProperty.SetCalendarTime(propertyBag, InternalSchema.MapiStartTime, InternalSchema.MapiPRStartDate, InternalSchema.TimeZoneDefinitionStart, false, value);
 }