You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: main.go
    path of file: ./repos/kubernetes/staging/src/k8s.io/client-go/examples/leader-election
    
    the code of the file until where you have to start completion: /*
Copyright 2018 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file
    
func main() {
	klog.InitFlags(nil)

	var kubeconfig string
	var leaseLockName string
	var leaseLockNamespace string
	var id string

	flag.StringVar(&kubeconfig, "kubeconfig", "", "absolute path to the kubeconfig file")
	flag.StringVar(&id, "id", uuid.New().String(), "the holder identity name")
	flag.StringVar(&leaseLockName, "lease-lock-name", "", "the lease lock resource name")
	flag.StringVar(&leaseLockNamespace, "lease-lock-namespace", "", "the lease lock resource namespace")
	flag.Parse()

	if leaseLockName == "" {
		klog.Fatal("unable to get lease lock resource name (missing lease-lock-name flag).")
	}
	if leaseLockNamespace == "" {
		klog.Fatal("unable to get lease lock resource namespace (missing lease-lock-namespace flag).")
	}

	// leader election uses the Kubernetes API by writing to a
	// lock object, which can be a LeaseLock object (preferred),
	// a ConfigMap, or an Endpoints (deprecated) object.
	// Conflicting writes are detected and each client handles those actions
	// independently.
	config, err := buildConfig(kubeconfig)
	if err != nil {
		klog.Fatal(err)
	}
	client := clientset.NewForConfigOrDie(config)

	run := func(ctx context.Context) {
		// complete your controller loop here
		klog.Info("Controller loop...")

		select {}
	}

	// use a Go context so we can tell the leaderelection code when we
	// want to step down
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	// listen for interrupts or the Linux SIGTERM signal and cancel
	// our context, which the leader election code will observe and
	// step down
	ch := make(chan os.Signal, 1)
	signal.Notify(ch, os.Interrupt, syscall.SIGTERM)
	go func() {
		<-ch
		klog.Info("Received termination, signaling shutdown")
		cancel()
	}()

	// we use the Lease lock type since edits to Leases are less common
	// and fewer objects in the cluster watch "all Leases".
	lock := &resourcelock.LeaseLock{
		LeaseMeta: metav1.ObjectMeta{
			Name:      leaseLockName,
			Namespace: leaseLockNamespace,
		},
		Client: client.CoordinationV1(),
		LockConfig: resourcelock.ResourceLockConfig{
			Identity: id,
		},
	}

	// start the leader election code loop
	leaderelection.RunOrDie(ctx, leaderelection.LeaderElectionConfig{
		Lock: lock,
		// IMPORTANT: you MUST ensure that any code you have that
		// is protected by the lease must terminate **before**
		// you call cancel. Otherwise, you could have a background
		// loop still running and another process could
		// get elected before your background loop finished, violating
		// the stated goal of the lease.
		ReleaseOnCancel: true,
		LeaseDuration:   60 * time.Second,
		RenewDeadline:   15 * time.Second,
		RetryPeriod:     5 * time.Second,
		Callbacks: leaderelection.LeaderCallbacks{
			OnStartedLeading: func(ctx context.Context) {
				// we're notified when we start - this is where you would
				// usually put your code
				run(ctx)
			},
			OnStoppedLeading: func() {
				// we can do cleanup here
				klog.Infof("leader lost: %s", id)
				os.Exit(0)
			},
			OnNewLeader: func(identity string) {
				// we're notified when new leader elected
				if identity == id {
					// I just got the lock
					return
				}
				klog.Infof("new leader elected: %s", identity)
			},
		},
	})
}