Slide 18
Slide 18 text
unregisterForRemoteNotifications()
Unregister for all remote notifications received via
Apple Push Notification service.
You should call this method in rare circumstances only,
such as when a new version of the app removes support
for all types of remote notifications. Users can
temporarily prevent apps from receiving remote
notifications through the Notifications section of the
Settings app. Apps unregistered through this method can
always re-register.