toJson method Null safety

Map<String, dynamic> toJson()

Implementation

core.Map<core.String, core.dynamic> toJson() => {
      if (id != null) 'id': id!,
      if (kind != null) 'kind': kind!,
      if (languageCode != null) 'languageCode': languageCode!,
      if (name != null) 'name': name!,
    };