partial void DeleteCoupon(Coupon instance);
partial void UpdateCoupon(Coupon instance);
private void detach_Coupons(Coupon entity) { this.SendPropertyChanging("Coupons"); entity.CouponTyp = null; }
partial void InsertCoupon(Coupon instance);
private void attach_Coupons(Coupon entity) { this.SendPropertyChanging("Coupons"); entity.CouponTyp = this; }