toDuration method
Implementation
Duration toDuration() {
if (isNotNullOrEmpty) {
var convert = DateFormat("hh:mm:ss").parseUTC(toNotNull);
return Duration(
days: convert.day,
hours: convert.hour,
minutes: convert.minute,
seconds: convert.second,
milliseconds: convert.millisecond,
microseconds: convert.microsecond);
} else {
return const Duration();
}
}