Pass updates are an important way to engage with your users after the pass is created. For example,
by updating the gift card points on a users card as they redeem their points.
To update the way passes are displayed, such as when the logo changes, you only need to update or
patch the gift card class or use the Google Pay and Wallet Console.
Google propagates this information to every gift card object associated to the updated
gift card class.
This is the case for all fields defined at the gift card class level.
To update a single pass, such as when the gift card points balance changes,
you need to update or patch a single gift card object. This is the case for all fields defined at the
gift card object level.