public static ThemeViewModel ToViewModel(this ThemeModel model)
        {
            ThemeViewModel viewModel = new ThemeViewModel
            {
                Id = model.Id,
                Name = model.Name,
                Time = model.Time
            };

            return viewModel;
        }
 public ExamSetViewModel(ThemeViewModel theme, List<QuestionViewModel> questions)
 {
     Theme = theme;
     Questions = questions;
 }