### Question:
AustriaPaymentValidatorHolder implements CountryValidatorHolder { @Override public String getCountryIdentifier() { return "AT"; }  @Override String getCountryIdentifier(); @Override PaymentBodyFieldsValidator getPaymentBodyFieldsValidator(); @Override PaymentBusinessValidator getPaymentBusinessValidator(); @Override boolean isCustom();  }### Answer:
@Test void getCountryIdentifier() { assertEquals("AT", holder.getCountryIdentifier()); }