toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> datas = <String, dynamic>{};
datas['province'] = province;
datas['city'] = city;
datas['area'] = area;
datas['provinceCode'] = provinceCode;
datas['cityCode'] = cityCode;
datas['areaCode'] = areaCode;
return datas;
}