public function up(): void 	{ 		Schema::create('product_categories', function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->uuid('product_id'); 			$table->uuid('category_id'); 			$table->boolean('vat')->default(false);  			$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade'); 			$table->foreign('category_id')->references('id')->on('categories')->onDelete('cascade');  			$table->timestamps(); 		}); 	}