partial void DeleteCustomerInvoiceItem(CustomerInvoiceItem instance);
 partial void InsertCustomerInvoiceItem(CustomerInvoiceItem instance);
 partial void UpdateCustomerInvoiceItem(CustomerInvoiceItem instance);
		private void detach_CustomerInvoiceItems(CustomerInvoiceItem entity)
		{
			this.SendPropertyChanging();
			entity.CustomerInvoice = null;
		}