toJson method Null safety

Map<String, dynamic> toJson()

Implementation

Map<String, dynamic> toJson() {
  final map = <String, dynamic>{};
  map['videoroom'] = videoroom;
  map['room'] = room;
  if (participants != null) {
    map['participants'] = participants?.map((v) => v.toJson()).toList();
  }
  return map;
}