public function up(): void 	{ 		Schema::create('product_variant_prices', function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->uuid('product_variant_id'); 			$table->decimal('price'); 			$table->date('valid_from'); 			$table->timestamps();  			$table->foreign('product_variant_id')->references('id')->on('product_variants')->onDelete('cascade'); 		}); 	}