public Boolean delete(QuestionUI question) {
    Question existing = qaRepo.findBySubject(question.getSubject());

    if (existing == null) {
      return false;
    }

    qaRepo.delete(existing);
    return true;
  }
  public QuestionUI update(QuestionUI question) {
    Question existing = qaRepo.findBySubject(question.getSubject());

    return qMapper.toUIBean(qaRepo.save(existing));
  }