docs: private void updateWorker(final Worker worker)
    {
      final ZkWorker zkWorker = zkWorkers.get(worker.getHost());
      if (zkWorker != null) {
        log.info("Worker[%s] updated its announcement from[%s] to[%s].", worker.getHost(), zkWorker.getWorker(), worker);
        zkWorker.setWorker(worker);
      } else {
        log.warn(
            "WTF, worker[%s] updated its announcement but we didn't have a ZkWorker for it. Ignoring.",
            worker.getHost()
        );
      }
    }