toJson method
Converts an object to JSON.
Implementation
@override
Map<String, dynamic> toJson() {
final returnValue = <String, dynamic>{
'\$hash': '6c8e1e06',
'\$name': 'Birthday',
'flags': flags,
'day': day,
'month': month,
'year': year,
};
// Finished toJson.
return returnValue;
}