unregister
Unregisters this app instance from FCM's FID registration, see register; the task fails on Apple and JS.
Fails: the iOS SDK has no registration by Firebase installation ID.
Unregisters this app instance from FCM's FID registration, see register; the task fails on Apple and JS.
Fails: the JS SDK has no registration by Firebase installation ID.
Unregisters this app instance from FCM's FID registration, see register; the task fails on Apple and JS.
Fails: the JS SDK has no registration by Firebase installation ID.