whereIsoIn method
gets localized countries from isocodes
Implementation
List<Country> whereIsoIn(
List<IsoCode> isoCodes, {
List<IsoCode> omit = const [],
}) {
final omitSet = Set.from(omit);
return isoCodes
.where((isoCode) => !omitSet.contains(isoCode))
.where((isoCode) => _localizedCountries.containsKey(isoCode))
.map((iso) => _localizedCountries[iso]!)
.toList();
}