public function up(): void 	{ 		Schema::create('order_items', function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->double('price'); 			$table->unsignedInteger('quantity'); 			$table->string('label', 100); 			$table->nullableUuidMorphs('item');  			$table->uuid('order_id'); 			$table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');  			$table->timestamps(); 		}); 	}