toJson method
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = <String, dynamic>{};
data['citycode'] = citycode;
data['num'] = num;
if (districts != null) {
data['districts'] = districts!.map((v) => v.toJson()).toList();
}
data['city'] = city;
data['adcode'] = adcode;
return data;
}