Entity sender = extractSenderJID(stanza, sessionContext);
String iqStanzaID = stanza.getAttributeValue("id");
StanzaBuilder sb = StanzaBuilder.createIQStanza(serverJID, sender, IQStanzaType.RESULT, iqStanzaID);
sb.startInnerElement("pubsub", NamespaceURIs.XEP0060_PUBSUB);
String nodeName = extractNodeName(stanza);
List<SubscriptionItem> subscriptions = collectSubscriptions(root, sender, nodeName);
buildSuccessStanza(sb, nodeName, subscriptions);