private async Task <IEnumerable <Holiday> > GetHolidaysByMonthAsync(string countryIsoCode, int year, int month)
{
if (!await HolidaysAlreadyExist(countryIsoCode, year))
{
await CreateHoliday(countryIsoCode, year);
}
return(await HolidayRepository.GetHolidaysByMonthAsync(countryIsoCode, year, month));
}
