docs: public void deleteAllItems() throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          PubSub request = createPubsubPacket(Type.set, new NodeExtension(PubSubElementType.PURGE_OWNER, getId()));
  
          pubSubManager.getConnection().createStanzaCollectorAndSend(request).nextResultOrThrow();
      }