docs: public void deleteItem(Collection<String> itemIds) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          List<Item> items = new ArrayList<>(itemIds.size());
  
          for (String id : itemIds) {
               items.add(new Item(id));
          }
          PubSub request = createPubsubPacket(Type.set, new ItemsExtension(ItemsExtension.ItemsElementType.retract, getId(), items));
          pubSubManager.getConnection().createStanzaCollectorAndSend(request).nextResultOrThrow();
      }