code: public static boolean isSEPACountry(String countryCode) {
          int index = indexOf(countryCode);
          if (index > -1) {
              return (CountryCodes.COUNTRY_IBAN_LENGTHS[index] & SEPA) == SEPA;
          }
          return false;
      }
docs: Returns whether the given country code is in SEPA.
  @param countryCode a non-null, uppercase, two-character country code.
  @return true if SEPA, false if not.
  @throws NullPointerException if the input is null.