toJson method Null safety
Implementation
Map<String, dynamic> toJson() {
final Map<String, dynamic> data = new Map<String, dynamic>();
data["event"] = this.event;
data["code"] = this.code;
data["reason"] = this.reason;
data["reason_header_protocol"] = this.reasonHeaderProtocol;
data["reason_header_cause"] = this.reasonHeaderCause;
return data;
}