public function up(): void 	{ 		Schema::create('comments', static function (Blueprint $table): void { 			$table->uuid('id')->primary(); 			$table->string('content', 250); 			$table->uuidMorphs('item'); 			$table->uuidMorphs('author'); 			$table->timestamps(); 			$table->index(Model::CREATED_AT); 		}); 	}