public async Task <IEnumerable <District> > GetDistrictsAsync(string countryId)
{
if (!long.TryParse(countryId, out long id))
{
throw new MyAppException
{
ErrorCode = MyCustomErrorCodes.COUNTRY_ID_UNPARSABLE
};
}
return(_districtService.GetAllAsync <string>(
(p => p.CountryId == id),
(p => p.Name),
true
));
}