public bool ReturnBook(BookItem bookitem) { this.checkForFine(bookitem); BookReservation BookReservation = BookReservation.FetchReservationDetails(bookitem.getBarcode()); if (BookReservation != null) { BookItem.updateStatus(BookStatus.Reserved); BookReservation.SendBookAvailableNotification(); } bookitem.updateStatus(BookStatus.avaialble); }