docs: public Data txnCommitPollBackup(long itemId) {
          TxQueueItem item = txMap.remove(itemId);
          if (item == null) {
              logger.warning("txnCommitPoll operation-> No txn item for itemId: " + itemId);
              return null;
          }
          if (store.isEnabled()) {
              try {
                  store.delete(item.getItemId());
              } catch (Exception e) {
                  logger.severe("Error during store delete: " + item.getItemId(), e);
              }
          }
          return item.getData();
      }