class CheckIPEntity { CheckIPEntity({this.errorCode, this.description, this.errorMsg, this.data}); CheckIPEntity.fromJson(Map json) { errorCode = json['errorCode']; description = json['description']; errorMsg = json['errorMsg']; data = json['data'] != null ? Data.fromJson(json['data']) : null; } int? errorCode; String? description; String? errorMsg; Data? data; Map toJson() { final Map data = {}; data['errorCode'] = errorCode; data['description'] = description; data['errorMsg'] = errorMsg; if (this.data != null) { data['data'] = this.data!.toJson(); } return data; } } class Data { Data({this.ip, this.name, this.abbreviation}); Data.fromJson(Map json) { ip = json['ip']; name = json['name']; abbreviation = json['abbreviation']; } String? ip; String? name; String? abbreviation; Map toJson() { final Map data = {}; data['ip'] = ip; data['name'] = name; data['abbreviation'] = abbreviation; return data; } }