code: def get_known_subqueues(self):
          
  
          all_queues_from_mongodb = Queue.all_known(sources=("jobs", ))
  
          idprefix = self.id
          if not idprefix.endswith("/"):
              idprefix += "/"
  
          return {q for q in all_queues_from_mongodb if q.startswith(idprefix)}
docs: Returns all known subqueues