The app associated with the current
InstanceId service instance.
var app = instanceId.app;
deleteInstanceId(instanceId) returns Promise containing void
Deletes the specified instance ID from Firebase. This can be used to delete an instance ID and associated user data from a Firebase project, pursuant to the General Data Protection Regulation (GDPR).
The instance ID to be deleted.
non-null Promise containing voidA promise fulfilled when the instance ID is deleted.