/// <summary>
/// Gets the country regions for a specific store. Specify a <paramref name="countryId"/> to only get country regions for this country.
/// </summary>
/// <param name="storeId">Id of the store.</param>
/// <param name="countryId">Id of the country.</param>
/// <returns>A collection of country region objects.</returns>
public static IEnumerable <CountryRegion> GetCountryRegions(long storeId, long?countryId = null)
{
return(TeaCommerceHelper.GetCountryRegions(storeId, countryId));
}