public QuestionGroupsController(IQuestionGroupService questionGroupService, IFeedbackTypeService feedbackTypeService)
 {
     _questionGroupService = questionGroupService;
     _feedbackTypeService = feedbackTypeService;
 }
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (QuestionGroupService != null)
                {
                    QuestionGroupService = null;
                }

                if (FeedbackTypeService != null)
                {
                    FeedbackTypeService = null;
                }
            }
            base.Dispose(disposing);
        }