This the exact approach also used to refer to a behavioral member of a class. If we wanted to refer to the operation, borrow(), that might appear on both the Book and Video class. We would refer to the operation as “Book.borrow()” and “Video.borrow().” If we wanted to invoke the borrow operation on the myBook instance or on the myVideo instance, we would, in a similar manner, use myBook.borrow() and myVideo.borrow().