Create a State Diagram for a simple Restaurant Ordering System. Each customer (user) is allowed to order from the menu through the Order(product) method. This requests the cashier for the designated item from the product list. The cashier checks if the product is available. When the product is available, the chef will prepare the food. Once it is done, the waiter will serve the food to the customer. Show in your diagram all necessary states, methods, connections, stimuli, and responses.Create a State Diagram for a simple Restaurant Ordering System. Each customer (user) is allowed to order from the menu through the Order(product) method. This requests the cashier for the designated item from the product list. The cashier checks if the product is available. When the product is available, the chef will prepare the food. Once it is done, the waiter will serve the food to the customer. Show in your diagram all necessary states, methods, connections, stimuli, and responses.