private void detach_ProductDocuments(ProductDocument entity)
		{
			this.SendPropertyChanging();
			entity.Product = null;
		}
		private void attach_ProductDocuments(ProductDocument entity)
		{
			this.SendPropertyChanging();
			entity.Product = this;
		}
 partial void UpdateProductDocument(ProductDocument instance);
 partial void DeleteProductDocument(ProductDocument instance);
 partial void InsertProductDocument(ProductDocument instance);