toJson method
Implementation
@override
dynamic toJson() {
final result = <String, dynamic>{};
if (custom != null) {
result['custom'] = custom;
}
if (origin != null) {
result['origin'] = origin;
}
if (sender != null) {
result['sender'] = sender;
}
if (type != null) {
result['type'] = type;
}
return result;
}