code: public Listeners<JobXMLDescriptor> getOrCreateListeners()
     {
        Node node = model.getOrCreate("listeners");
        Listeners<JobXMLDescriptor> listeners = new ListenersImpl<JobXMLDescriptor>(this, "listeners", model, node);
        return listeners;
     }
docs: If not already created, a new <code>listeners</code> element with the given value will be created.
  Otherwise, the existing <code>listeners</code> element will be returned.
  @return  a new or existing instance of <code>Listeners<JobXMLDescriptor></code>