Re: node.getSubscriptions() does not return all users who are subscribed to the pubsub node

But for getSubscriptionsAsOwner it should have been

SUBSCRIPTIONS("subscriptions", PubSubNamespace.OWNER),

 

I guess thats why subElem is null.

Nope, that's actually a little flaw in the PubSub implementations design. NodeExtension, the superclass of SubscriptionsExtensions, uses a namespace when it actually has only an implicit one inherited from the pubsub element.