public function up(): void 	{ 		Schema::create('product_variants', function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->string('name', 80); 			$table->float('measure'); 			$table->float('price'); 			$table->uuid('product_id'); 			$table->string('product_code')->nullable();  			$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade');  			$table->timestamps(); 		}); 	}