toJson method
Implementation
@override
Map<String, dynamic> toJson() => <String, dynamic>{
'id': id.toString(),
'added_date': addedDate,
'minithumbnail': minithumbnail?.toJson(),
'sizes': sizes.map((item) => item.toJson()).toList(),
'animation': animation?.toJson(),
'small_animation': smallAnimation?.toJson(),
'sticker': sticker?.toJson(),
'@type': constructor,
};