public BookController(IBookService bookService, IRentalService rentalService, IResourceUtil resourceUtil, IMapper mapper)
 {
     this._bookService   = bookService;
     this._rentalService = rentalService;
     this._resourceUtil  = resourceUtil;
     this._mapper        = mapper;
 }
 public AuthorController(IAuthorService authorService, IResourceUtil resourceUtil)
 {
     this._authorService = authorService;
     this._resourceUtil  = resourceUtil;
 }