import 'package:tuple/tuple.dart'; import 'Music.dart'; class Capsule { final String _id; late Music _music; Tuple2 _location; DateTime _date; // Constructor Capsule(this._id, this._location, this._date); //Getters and setters String get id => _id; Music get music => _music; set music(Music value) { _music = value; } Tuple2 get location => _location; set location(Tuple2 value) { _location = value; } DateTime get date => _date; set date(DateTime value) { _date = value; } }