//[Produces(typeof(BookDTO))]
public async Task <ActionResult <BookDTO> > AddBook([FromBody] BookDTO bookDTO)
{
var book = _mapper.Map <Book>(bookDTO);
var checkAdd = await _librarymanager.AddBook(book);
if (checkAdd == 0)
{
return(NotFound());
}
return(Ok(_mapper.Map <BookDTO>(book)));
}