public ExamAttemptController(
     IExamAttemptService examAttemptService,
     IUserService userService,
     IAnwserService anwserService,
     IMistakeService mistakeService,
     IMapper mapper)
 {
     _anwserService      = anwserService;
     _userService        = userService;
     _examAttemptService = examAttemptService;
     _mistakeService     = mistakeService;
     _mapper             = mapper;
 }
 public AnwserController(
     IAnwserService anwserService,
     IUserService userService,
     ITopicService topicService,
     IExamAttemptService examAttemptService,
     IMapper mapper)
 {
     _topicService       = topicService;
     _userService        = userService;
     _anwserService      = anwserService;
     _mapper             = mapper;
     _examAttemptService = examAttemptService;
 }