class LevelInfo { int? currentLevel; int? currentMin; int? currentExp; int? nextExp; LevelInfo({ this.currentLevel, this.currentMin, this.currentExp, this.nextExp, }); factory LevelInfo.fromJson(Map json) => LevelInfo( currentLevel: json['current_level'] as int?, currentMin: json['current_min'] as int?, currentExp: json['current_exp'] as int?, nextExp: json['next_exp'] as int?, ); }