### Question:
PIIS429ErrorMapper extends Psd2ErrorMapper<MessageError, Error429NGPIIS> { @Override public HttpStatus getErrorStatus() { return HttpStatus.TOO_MANY_REQUESTS; }  @Override Function<MessageError, Error429NGPIIS> getMapper(); @Override HttpStatus getErrorStatus();  }### Answer:
@Test void getErrorStatus_shouldReturn429() { HttpStatus errorStatus = piis429ErrorMapper.getErrorStatus(); assertEquals(HttpStatus.TOO_MANY_REQUESTS, errorStatus); }