class LevelInfo { int? privilegeType; String? name; int? price; int? memberTotal; LevelInfo({this.privilegeType, this.name, this.price, this.memberTotal}); factory LevelInfo.fromJson(Map json) => LevelInfo( privilegeType: json['privilege_type'] as int?, name: json['name'] as String?, price: json['price'] as int?, memberTotal: json['member_total'] as int?, ); Map toJson() => { 'privilege_type': privilegeType, 'name': name, 'price': price, 'member_total': memberTotal, }; }