country.dart

class Country {
  final String name;
  final String capital;

  Country({this.name, this.capital});

  Map<String, dynamic> toJson() => {'name': name, 'capital': capital};

  factory Country.fromMap(Map data) {
    data = data ?? {};
    return Country(
        name: data['name'] ?? null, capital: data['capital'] ?? null);
  }
}