flutter json to class
//insideclass
ClassName.fromJson(Map<String, dynamic> json) {
variable1 = json['variable11'];
variable2 = json['variable12'];
variable3 = json['variable13']['variable14'];
}
//uses
//after http request or whatever
Map<dynamic, dynamic> res = await jsonDecode(response.body.toString());
Classname.fromJson(res);