toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (code != null) 'code': code!,
if (countryCode != null) 'countryCode': countryCode!,
if (countryDartId != null) 'countryDartId': countryDartId!,
if (id != null) 'id': id!,
if (kind != null) 'kind': kind!,
};