public function deleting(Category $category): void 	{ 		foreach ($category->children as $child) { 			$child->delete(); 		}  		foreach ($category->categoryFilters as $category_filter) { 			$category_filter->delete(); 		}  		foreach ($category->vatRates as $vat_rate) { 			$vat_rate->delete(); 		}  		foreach ($category->productCategories as $product_category) { 			$product_category->delete(); 		} 	}