toJson method
Implementation
Map<String, dynamic> toJson() {
final data = Map<String, dynamic>();
if (this.group != null) {
data['group'] = this.group!.toJson();
}
if (this.opUser != null) {
data['opUser'] = this.opUser!.toJson();
}
if (this.changedUser != null) {
data['changedUser'] = this.changedUser!.toJson();
}
return data;
}