code: @Nullable
    public static IBANCountryData getCountryData (@Nonnull final String sCountryCode)
    {
      ValueEnforcer.notNull (sCountryCode, "CountryCode");
  
      return s_aIBANData.get (sCountryCode.toUpperCase (Locale.US));
    }
docs: Get the country data for the given country code.
  
  @param sCountryCode
  The country code to use. May not be <code>null</code> and needs to
  have exactly 2 characters to work.
  @return <code>null</code> if the passed country has no IBAN support.