toJson method Null safety
Implementation
Map<String, dynamic> toJson() => <String, dynamic>{
'year': year,
'month': month,
'day': day,
'label': _eventLabelToString[label],
'customLabel': customLabel,
};
Map<String, dynamic> toJson() => <String, dynamic>{
'year': year,
'month': month,
'day': day,
'label': _eventLabelToString[label],
'customLabel': customLabel,
};