partial void DeleteInvoiceDetail(InvoiceDetail instance);
 partial void UpdateInvoiceDetail(InvoiceDetail instance);
		private void detach_InvoiceDetails(InvoiceDetail entity)
		{
			this.SendPropertyChanging();
			entity.InvoiceHeader = null;
		}
 partial void InsertInvoiceDetail(InvoiceDetail instance);
		private void detach_InvoiceDetails(InvoiceDetail entity)
		{
			this.SendPropertyChanging();
			entity.ItemPricing = null;
		}