docs: String zone(String podName) {
          String podUrlString = String.format("%s/api/v1/namespaces/%s/pods/%s", kubernetesMaster, namespace, podName);
          String nodeName = extractNodeName(callGet(podUrlString));
  
          String nodeUrlString = String.format("%s/api/v1/nodes/%s", kubernetesMaster, nodeName);
          return extractZone(callGet(nodeUrlString));
      }