partial void DeleteRoomBillingInvoice(RoomBillingInvoice instance);
partial void InsertRoomBillingInvoice(RoomBillingInvoice instance);
partial void UpdateRoomBillingInvoice(RoomBillingInvoice instance);
private void detach_RoomBillingInvoices(RoomBillingInvoice entity) { this.SendPropertyChanging(); entity.User = null; }