private void detach_ReturnEvents(ReturnEvent entity)
 {
     this.SendPropertyChanging();
     entity.Product = null;
 }
 partial void DeleteReturnEvent(ReturnEvent instance);
 partial void InsertReturnEvent(ReturnEvent instance);
 partial void UpdateReturnEvent(ReturnEvent instance);
 private void attach_ReturnEvents(ReturnEvent entity)
 {
     this.SendPropertyChanging();
     entity.Client = this;
 }