import 'fallback.dart'; import 'item.dart'; class OpusData { Item? item; Fallback? fallback; OpusData({ this.item, this.fallback, }); factory OpusData.fromJson(Map json) => OpusData( item: json['item'] == null ? null : Item.fromJson(json['item'] as Map), fallback: json['fallback'] == null ? null : Fallback.fromJson(json['fallback']), ); Map toJson() => { 'item': item?.toJson(), 'fallback': fallback?.toJson(), }; }