public IActionResult Post([FromBody] BookVO book)
 {
     if (book.IsNull())
     {
         return(BadRequest());
     }
     return(new ObjectResult(_bookBusiness.Create(book)));
 }
        // PUT api/values/5
        public IActionResult Put([FromBody] BookVO book)
        {
            if (book == null)
            {
                return(BadRequest());
            }

            book = _bookBusiness.Update(book);
            if (book.IsNull())
            {
                return(NotFound());
            }
            return(new ObjectResult(book));
        }