Inheritance: INotifyPropertyChanging, INotifyPropertyChanged
		private void detach_TpUsers(TpUser entity)
		{
			this.SendPropertyChanging();
			entity.Role = null;
		}
		private void attach_TpUsers(TpUser entity)
		{
			this.SendPropertyChanging();
			entity.Role = this;
		}
 partial void UpdateTpUser(TpUser instance);
 partial void DeleteTpUser(TpUser instance);
 partial void InsertTpUser(TpUser instance);