toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (addTime != null) 'addTime': addTime!,
if (allowMissing != null) 'allowMissing': allowMissing!,
if (placeIds != null) 'placeIds': placeIds!,
if (type != null) 'type': type!,
};