toMap method
Implementation
Map<String, dynamic> toMap() {
return <String, dynamic>{
'britishPaceMap': britishPaceMap,
'britishPartTimeMap': britishPartTimeMap,
'partTimeMap': partTimeMap,
'paceMap': paceMap,
'avgPace': avgPace,
'bestPace': bestPace,
}..removeWhere((String k, dynamic v) => v == null);
}