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)); }