toJson method
Converts this AttendeeAvailability object to a JSON object.
The 'availability' key maps to a string representing the availability status.
The 'attendee' key maps to a JSON object that represents the Attendee object.
If the Attendee object is null, the 'attendee' key maps to null.
Implementation
Map<String, dynamic> toJson() {
return {
'availability': availability,
'attendee': attendee?.toJson(),
};
}