class TramStation { final String name; final String city; final double latitude; final double longitude; TramStation({ required this.name, required this.city, required this.latitude, required this.longitude, }); factory TramStation.fromJson(Map json) { return TramStation( name: json['name'] as String, city: json['city'] as String, latitude: json['latitude'] as double, longitude: json['longitude'] as double, ); } }