### Question:
SB401ErrorMapper extends Psd2ErrorMapper<MessageError, Error401NGSBS> { @Override public HttpStatus getErrorStatus() { return HttpStatus.UNAUTHORIZED; }  @Override Function<MessageError, Error401NGSBS> getMapper(); @Override HttpStatus getErrorStatus();  }### Answer:
@Test void getErrorStatus_shouldReturn401() { HttpStatus errorStatus = sb401ErrorMapper.getErrorStatus(); assertEquals(HttpStatus.UNAUTHORIZED, errorStatus); }