public async Task <ReadBookDto> GetBook(Guid id)
        {
            Book book = await _context.Books.FindAsync(id);

            ReadBookDto response = _mapper.Map <ReadBookDto>(book);

            return(response);
        }
        public async Task <ReadBookDto> CreateBook(CreateBookDto request)
        {
            Book book = _mapper.Map <Book>(request);

            var task = await _context.Books.AddAsync(book);

            ReadBookDto response = _mapper.Map <ReadBookDto>(task.Entity);

            return(response);
        }