public function up(): void 	{ 		Schema::create('product_specs_categories', function (Blueprint $table): void { 			$table->uuid('product_id')->index(); 			$table->uuid('specs_category_id')->index(); 			$table->timestamps();  			$table->foreign('product_id')->references('id')->on('products')->onDelete('cascade'); 			$table->foreign('specs_category_id')->references('id')->on('specs_categories')->onDelete('cascade'); 			$table->index(Model::CREATED_AT); 		}); 	}