public QuizService(IModelFactory modelFactory, IQuizRepository quizRepository, IQuizQuestionRepository quizQuestionRepository,
                    IQuestionRepository questionRepository, ICourseRepository courseRepository, IQuizPagesRepository quizPagesRepository)
 {
     _modelFactory           = modelFactory;
     _quizRepository         = quizRepository;
     _quizQuestionRepository = quizQuestionRepository;
     _questionRepository     = questionRepository;
     _courseRepository       = courseRepository;
     _quizPagesRepository    = quizPagesRepository;
 }
 public QuizService(IModelFactory modelFactory, IQuizRepository quizRepository, IQuizQuestionRepository quizQuestionRepository,
     IQuestionRepository questionRepository, ICourseRepository courseRepository, IQuizPagesRepository quizPagesRepository)
 {
     _modelFactory = modelFactory;
     _quizRepository = quizRepository;
     _quizQuestionRepository = quizQuestionRepository;
     _questionRepository = questionRepository;
     _courseRepository = courseRepository;
     _quizPagesRepository = quizPagesRepository;
 }