Proper way to listen for pubsub subscription requests

I have 2 questions and need some information regarding these.

  1. What is the ‘proper’ way to listen for the subscription requests for a pubsub node?
  • If I set up a stanza listener, I am able to see the subscription request for the owner of the pubsub node. Is this the proper way?
  1. If the pubsub subscription request is not processed when received, is there a way to get a list of pending subscription requests later on?

Node.getSubscriptionsAsOwner() does not get the pending requests.