Launches a UI allowing the user to save a wallet object (loyalty card, gift card, or offer) to Google Pay.

This API conforms to the protocol defined by AutoResolveHelper, so instead of handling the returned exceptions yourself when UI needs to be shown (i.e. ResolvableApiException), you should use the AutoResolveHelper to pipe the results back to Activity.onActivityResult(int, int, android.content.Intent). This allows your code to receive the result whether the UI is shown or not.