partial void DeleteRental(Rental instance);
 partial void UpdateRental(Rental instance);
		private void detach_Rentals(Rental entity)
		{
			this.SendPropertyChanging();
			entity.Movie = null;
		}
 partial void InsertRental(Rental instance);
		private void attach_Rentals(Rental entity)
		{
			this.SendPropertyChanging();
			entity.Movie = this;
		}