nthDaysOfWeek method
Implementation
@override
String nthDaysOfWeek(Iterable<int> occurrences, String daysOfWeek) {
if (occurrences.isEmpty) return daysOfWeek;
final ordinals = list(
occurrences.map(ordinal).toList(),
ListCombination.conjunctiveShort,
);
return 'the $ordinals $daysOfWeek';
}