import 'package:json_annotation/json_annotation.dart'; part 'option.g.dart'; @JsonSerializable() class Option { @JsonKey(name: 'question_id') final int? questionId; @JsonKey(name: 'option_text') final String? optionText; const Option({this.optionText, this.questionId}); factory Option.fromJson(Map json) => _$OptionFromJson(json); Map toJson() => _$OptionToJson(this); }