public WorkerProcessBuilder worker(Action<? super WorkerProcessContext> action) {
        this.action = action;
        return this;
    }

    @Override
    public Action<? super WorkerProcessContext> getWorker() {
        return action;
    }

    @Override
    public JavaExecHandleBuilder getJavaCommand() {
        return javaCommand;
    }

    @Override
    public LogLevel getLogLevel() {

// Wait for the given workers to exit & clean up.
func waitForWorkerExit(t *testing.T, m *manager, workerPaths []probeKey) error {
	for _, w := range workerPaths {
		condition := func() (bool, error) {
			_, exists := m.getWorker(w.podUID, w.containerName, w.probeType)
			return !exists, nil
		}
		if exited, _ := condition(); exited {
			continue // Already exited, no need to poll.
		}
		t.Logf("Polling %v", w)

		numHealers = numCores / 4
	} else {
		numHealers = info.NRRequests / 4
	}
	if numHealers < 4 {
		numHealers = 4
	}
	// allow overriding this value as well..
	if v := globalHealConfig.GetWorkers(); v > 0 {
		numHealers = uint64(v)
	}

	healingLogEvent(ctx, fmt.Sprintf("Healing drive '%s' - use %d parallel workers.", tracker.disk.String(), numHealers))

	jt, _ := workers.New(int(numHealers))