public void TakeBook(IBookModel book) { TakenBooks.Add(book.ID); }
public void BookTaken(BookCopy copy) { copy.BookTaken(this.ID); TakenBooks.Add(copy); }
public void TakeBook(IBookModel book) { TakenBooks.Add(book.ID); }
public void BookTaken(BookCopy copy) { copy.BookTaken(this.ID); TakenBooks.Add(copy); }