The 'Added to Cart' event is used to track when a user adds a product to their cart.
The 'Opened App' event is used to track when a user opens the app.
The 'Started Checkout' event is used to track when a user starts the checkout process.
The 'Viewed Product' event is used to track when a user views a product.
EventName is a convenience enum for the names of common events that can be tracked.