expectedMandatoryErrs: 1,
		},
		{
			name: "the maximum skew between the cluster version and the kubelet versions should be three minor version.",
			vg: &fakeVersionGetter{
				clusterVersion: "v1.13.0",
				kubeletVersion: "v1.10.8",
				kubeadmVersion: "v1.13.0",
			},
			newK8sVersion: "v1.13.0",
		},
		{

	MaximumAllowedMinorVersionDowngradeSkew = 1

	// MaximumAllowedMinorVersionKubeletSkew describes how many minor versions the control plane version and the kubelet can skew in a kubeadm cluster
	MaximumAllowedMinorVersionKubeletSkew = 3
)

// VersionSkewPolicyErrors describes version skew errors that might be seen during the validation process in EnforceVersionPolicies
type VersionSkewPolicyErrors struct {
	Mandatory []error
	Skippable []error
}

}

// nextScheduleTimeDuration returns the time duration to requeue based on
// the schedule and last schedule time. It adds a 100ms padding to the next requeue to account
// for Network Time Protocol(NTP) time skews. If the time drifts the adjustment, which in most
// realistic cases should be around 100s, the job will still be executed without missing
// the schedule.

			expectedResult: DefaultKubernetesPlaceholderVersion,
		},
		{
			name:           "valid skew of -1",
			versionInfo:    &apimachineryversion.Info{Major: "1", GitVersion: "v1.23.0"},
			n:              -1,
			expectedResult: version.MustParseSemantic("v1.22.0"),
		},
		{
			name:           "valid skew of 0",
			versionInfo:    &apimachineryversion.Info{Major: "1", GitVersion: "v1.23.0"},
			n:              0,

	// locally due to version skew.
	PeerCAFile string

	// PeerAdvertiseAddress is the IP for this kube-apiserver which is used by peer apiservers to route a request
	// to this apiserver. This happens in cases where the peer is not able to serve the request due to
	// version skew.
	PeerAdvertiseAddress peerreconcilers.PeerAdvertiseAddress

func (n *typeNode) Sym() *types.Sym   { return n.typ.Sym() }

// TypeNode returns the Node representing the type t.
func TypeNode(t *types.Type) Node {
	if n := t.Obj(); n != nil {
		if n.Type() != t {
			base.Fatalf("type skew: %v has type %v, but expected %v", n, n.Type(), t)
		}
		return n.(*Name)
	}
	return newTypeNode(t)
}

// A DynamicType represents a type expression whose exact type must be
// computed dynamically.

	}

	if err := features.ValidateVersion(features.InitFeatureGates, initCfg.FeatureGates, initCfg.KubernetesVersion); err != nil {
		return err
	}

	// Enforce the version skew policies
	klog.V(1).Infoln("[upgrade/version] enforcing version skew policies")
	allowRCUpgrades, ok := cmdutil.ValueFromFlagsOrConfig(flagSet, options.AllowRCUpgrades, upgradeCfg.Apply.AllowRCUpgrades, &flags.allowRCUpgrades).(*bool)
	if ok {

// accuracy and only uses their change to indicate that another client has
// renewed the leader lease. Thus the implementation is tolerant to arbitrary
// clock skew, but is not tolerant to arbitrary clock skew rate.
//
// However the level of tolerance to skew rate can be configured by setting
// RenewDeadline and LeaseDuration appropriately. The tolerance expressed as a

	endpointInterval time.Duration
	serverId         string
	// peeraddress stores the IP and port of this kube-apiserver. Used by peer kube-apiservers to
	// route request to this apiserver in case of a version skew.
	peeraddress string

	client kubernetes.Interface

	lock   sync.Mutex
	stopCh chan struct{} // closed by Stop()
}

func New(serverId string, peeraddress string,

 */
object Punycode {
  val PREFIX_STRING = "xn--"
  val PREFIX = PREFIX_STRING.encodeUtf8()

  private const val BASE = 36
  private const val TMIN = 1
  private const val TMAX = 26
  private const val SKEW = 38
  private const val DAMP = 700
  private const val INITIAL_BIAS = 72
  private const val INITIAL_N = 0x80

  /**
   * Returns null if any label is oversized so much that the encoder cannot encode it without