public IActionResult GetSubtopicDetails(int topicId)
        {
            ResponseModel responseModel = new ResponseModel();

            var model = _classBookService.GetSubtopicDetails(topicId, new List <SubtopicViewModel>());

            responseModel.Data    = model;
            responseModel.Message = "Success";

            return(StatusCode((int)HttpStatusCode.OK, responseModel));
        }
        public IActionResult GetSubtopicDetails(int topicId)
        {
            var model = _classBookService.GetSubtopicDetails(topicId, new List <SubtopicViewModel>());

            return(View(model));
        }