### Question:
AIS406ErrorMapper extends Psd2ErrorMapper<MessageError, Error406NGAIS> { @Override public HttpStatus getErrorStatus() { return HttpStatus.NOT_ACCEPTABLE; }  @Override Function<MessageError, Error406NGAIS> getMapper(); @Override HttpStatus getErrorStatus();  }### Answer:
@Test void getErrorStatus_shouldReturn406() { HttpStatus errorStatus = ais406ErrorMapper.getErrorStatus(); assertEquals(HttpStatus.NOT_ACCEPTABLE, errorStatus); }