code: public static boolean isValidatorPresent (@Nonnull final String sVATIN)
    {
      ValueEnforcer.notNull (sVATIN, "VATIN");
      if (sVATIN.length () <= 2)
        return false;
  
      final String sCountryCode = sVATIN.substring (0, 2).toUpperCase (Locale.US);
      return s_aMap.containsKey (sCountryCode);
    }
docs: Check if a validator is present for the provided VATIN.
  
  @param sVATIN
  VATIN to check. May not be <code>null</code>.
  @return <code>true</code> if a validator is present, <code>false</code> if
  not.