import 'package:json_annotation/json_annotation.dart'; import 'header.dart'; import 'payload.dart'; part 'tts_result.g.dart'; @JsonSerializable() class TtsResult { Header? header; Payload? payload; TtsResult({this.header, this.payload}); factory TtsResult.fromJson(Map json) { return _$TtsResultFromJson(json); } Map toJson() => _$TtsResultToJson(this); }