userModel

 class UserModel1 {

  late String id;
  late String fullname;
  late String email;

  UserModel1({required this.id, required this.fullname, required this.email});

  ///   Map to Object
  UserModel1.fromMap(Map<String, dynamic> map) {  //here, creating Constructor named "fromMap()"
    this.id = map["id"];
    this.fullname = map["fullname"];
    this.email = map["email"];
  }

  ///   Object to Map
  Map<String, dynamic> toMap() {
    return {
      "id" : this.id,
      "fullname" : this.fullname,
      "email" : this.email,
    };
  }
}