toJson method Null safety

Map<String, dynamic> toJson()

Implementation

Map<String, dynamic> toJson() {
  final map = <String, dynamic>{};
  map['janus'] = janus;
  map['session_id'] = sessionId;
  map['transaction'] = transaction;
  map['sender'] = sender;
  if (plugindata != null) {
    map['plugindata'] = plugindata?.toJson();
  }
  return map;
}