SipTransferCallEventResult.fromJson constructor Null safety
Implementation
SipTransferCallEventResult.fromJson(Map<String, dynamic> json) {
this.event = json["event"];
this.referId = json["refer_id"];
this.referTo = json["refer_to"];
this.referredBy = json["referred_by"];
this.replaces = json["replaces"];
this.headers = json["headers"];
}