if !ok {
			return Help{}, config.Errorf("unknown sub-system %s", subSys)
		}
	}

	h, ok := config.HelpSubSysMap[subSys]
	if !ok {
		return Help{}, config.Errorf("unknown sub-system %s", subSys)
	}
	if key != "" {
		value, ok := h.Lookup(key)
		if !ok {
			return Help{}, config.Errorf("unknown key %s for sub-system %s",
				key, subSys)
		}

	return json.Marshal(formatV3)
}

// countErrs - count a specific error.
func countErrs(errs []error, err error) int {
	i := 0
	for _, err1 := range errs {
		if err1 == err || errors.Is(err1, err) {
			i++
		}
	}
	return i
}

// Does all errors indicate we need to initialize all disks?.
func shouldInitErasureDisks(errs []error) bool {
	return countErrs(errs, errUnformattedDisk) == len(errs)
}

	return multiErr.ErrorOrNil()
}

func labelNamespaceWithWaypoint(kubeClient kube.CLIClient, ns string) error {
	nsObj, err := kubeClient.Kube().CoreV1().Namespaces().Get(context.Background(), ns, metav1.GetOptions{})
	if errors.IsNotFound(err) {
		return fmt.Errorf("namespace: %s not found", ns)
	} else if err != nil {
		return fmt.Errorf("failed to get namespace %s: %v", ns, err)
	}
	if nsObj.Labels == nil {

			}
			err = fmt.Errorf(msg)
		}
		if err != nil {
			log.Errorf("istio-cni cmdAdd error: %v", err)
		}
	}()

	conf, err := parseConfig(args.StdinData)
	if err != nil {
		log.Errorf("istio-cni cmdAdd failed to parse config %v %v", string(args.StdinData), err)
		return err
	}

	// Create a kube client
	client, err := newK8sClient(*conf)
	if err != nil {
		return err
	}

}

func newConfigDir(dir string, dirSet bool, getDefaultDir func() string) (*ConfigDir, error) {
	if dir == "" {
		dir = getDefaultDir()
	}

	if dir == "" {
		if !dirSet {
			return nil, fmt.Errorf("missing option must be provided")
		}
		return nil, fmt.Errorf("provided option cannot be empty")
	}

	// Disallow relative paths, figure out absolute paths.

-----------------
failure for all cases.

// Pseudo code for managing `format.json`.

// Generic checks.
if (no quorum) return error
if (any disk is corrupt) return error // Always error
if (jbod inconsistent) return error // Always error.
if (disks not recognized) // Always error.

// Specific checks.
if (all disks online)
  if (all disks return format.json)
     if (jbod consistent)

	// One of these retriable errors shall be retried.
	return errors.Is(err, errDiskNotFound) ||
		errors.Is(err, errConfigNotFound) ||
		errors.Is(err, context.DeadlineExceeded) ||
		errors.Is(err, errErasureWriteQuorum) ||
		errors.Is(err, errErasureReadQuorum) ||
		errors.Is(err, io.ErrUnexpectedEOF) ||
		errors.As(err, &rquorum) ||
		errors.As(err, &wquorum) ||
		isErrObjectNotFound(err) ||

		}
	}
	return errors.Join(execErrs...)
}

func (cfg *IptablesConfigurator) executeIptablesCommands(iptVer *dep.IptablesVersion, args [][]string) error {
	var iptErrs []error
	for _, argSet := range args {
		iptErrs = append(iptErrs, cfg.ext.Run(iptablesconstants.IPTables, iptVer, nil, argSet...))
	}
	return errors.Join(iptErrs...)
}

					stopping = true
					continue
				}
				if stopping {
					return layout, errors.New("number of disks per node does not match")
				}
				eps = append(eps, node.disks[i])
			}
			if stopping {
				break
			}
		}

		for _, node := range endpointsList {
			if node.nodeName != "" && singleNode {
				return layout, errors.New("all arguments must but either single node or distributed")
			}
		}

	conf, err := parseConfig(args.StdinData)
	if err != nil {
		t.Fatalf("config parse failed with error: %v", err)
	}

	// Create a kube client
	client := kube.NewFakeClient(objects...)

	mockRedir := &mockInterceptRuleMgr{}
	err = doAddRun(args, conf, client.Kube(), mockRedir)
	if err != nil {
		t.Fatalf("failed with error: %v", err)
	}

	return mockRedir
}