### Question:
PIS409ErrorMapper extends Psd2ErrorMapper<MessageError, Error409NGPIS> { @Override public HttpStatus getErrorStatus() { return HttpStatus.CONFLICT; }  @Override Function<MessageError, Error409NGPIS> getMapper(); @Override HttpStatus getErrorStatus();  }### Answer:
@Test void getErrorStatus_shouldReturn409() { HttpStatus errorStatus = pis409ErrorMapper.getErrorStatus(); assertEquals(HttpStatus.CONFLICT, errorStatus); }