class CartModel { CartModel({ this.status, this.error, required this.data, }); final int? status; final bool? error; final Data data; factory CartModel.fromJson(Map json) => CartModel( status: json["status"], error: json["error"], data: Data.fromJson(json["data"]), ); Map toJson() => { "status": status, "error": error, "data": data.toJson(), }; } class Data { Data({ this.messages, }); final String? messages; factory Data.fromJson(Map json) => Data( messages: json["messages"], ); Map toJson() => { "messages": messages, }; }