onFinishWebPaymentNavigation

This callback is invoked after attempting to navigate to the web payment url for a purchase.

The product and error parameters can be in one of three states:

• If the url was handled by a browser, and the web payment was for a specific product: product is not null, error is null.

• If the url was handled by a browser, and the web payment was for a paywall without specifying a product: both product and error are null.

• Otherwise: product is null, error is not null.

Parameters