public async Task <IActionResult> Index()
        {
            var query    = new GetAllBookInfo();
            var bookList = await _mediator.Send(query);

            return(View(bookList));
        }
 public async Task <List <Book> > Handle(GetAllBookInfo request, CancellationToken cancellationToken)
 {
     return(await _bookRepositoryQuery.GetAllBook());
 }