import 'package:freezed_annotation/freezed_annotation.dart'; part 'chat_meta_model.freezed.dart'; part 'chat_meta_model.g.dart'; @freezed class ChatMetaModel with _$ChatMetaModel { const factory ChatMetaModel({ @JsonKey(name: "last_page") required int lastPage, }) = _ChatMetaModel; factory ChatMetaModel.fromJson(Map json) => _$ChatMetaModelFromJson(json); }