public async Task <ActionResult> AddPages(Page[] pages)
        {
            if (!ModelState.IsValid || pages == null || pages.Length == 0)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.BadRequest, "Not all pages are valid"));
            }

            await _testService.DeleteAllPages(); //deleting old template

            await _testService.AddPages(pages);

            return(new HttpStatusCodeResult(HttpStatusCode.OK));
        }