In the WWDC 2019 talk about sign-in-with-apple (SIWA), there was a mention of using NotificationCenter to monitor credential state:
"Additionally, we expose a notification through NotificationCenter to let you know when this credential state changed to revoked."
However, I cannot find any further mention of this in the SIWA documentation, nor is this feature exercised in the Juice example code. Can someone point me to more information?
Thanks
J