partial void DeleteProductToLine(ProductToLine instance);
 partial void UpdateProductToLine(ProductToLine instance);
		private void detach_ProductToLines(ProductToLine entity)
		{
			this.SendPropertyChanging();
			entity.ProductLine = null;
		}
 partial void InsertProductToLine(ProductToLine instance);
		private void attach_ProductToLines(ProductToLine entity)
		{
			this.SendPropertyChanging();
			entity.Product = this;
		}