Draw a class diagram for online shopping system. An app called NoMart. Customer needs to register and fill in their information (email, phone number, name, and address), minimart also need to register and fill in their information (email, phone number, minimart name, address). The same minimart can register as a group. The driver's data/information will be provided by NoMart's admin (driver's name, phone number, email, and vehicle's number). NoMart's admin can both block and unblock driver, minimart, and customer account. Customers can find products and choose the minimart they want. Then customer needs to fill in the shipping address. The app will show the price of all products customers buy and the shipping charge. Only members can choose a discount coupon. Then customer needs to choose the payment method and pay. All payments will be via fintech. Order can't be canceled and if there is a product that is not available, the driver will ask the customer they want to cancel it or replace it. Customers can give ratings and reviews to both minimart and driver. Minimart also can add and change products.