type CommandParseError struct {
	Err error
}

func (c CommandParseError) Error() string {
	return c.Err.Error()
}

// Confirm waits for a user to confirm with the supplied message.
func Confirm(msg string, writer io.Writer) bool {
	for {
		_, _ = fmt.Fprintf(writer, "%s ", msg)
		var response string
		_, err := fmt.Scanln(&response)
		if err != nil {

func StaticPodControlPlane(client clientset.Interface, waiter apiclient.Waiter, pathMgr StaticPodPathManager, cfg *kubeadmapi.InitConfiguration, etcdUpgrade, renewCerts bool, oldEtcdClient, newEtcdClient etcdutil.ClusterInterrogator) error {
	recoverManifests := map[string]string{}
	var isExternalEtcd bool

	beforePodHashMap, err := waiter.WaitForStaticPodControlPlaneHashes(cfg.NodeRegistration.Name)
	if err != nil {

	gracePeriod := int64(0)
	return metav1.DeleteOptions{
		PropagationPolicy:  &propagationPolicy,
		GracePeriodSeconds: &gracePeriod,
	}
}

// WaitUntilPodsAreReady waits until the pod with the name/namespace is in ready state.
func WaitUntilPodsAreReady(fetchFunc PodFetchFunc, opts ...retry.Option) ([]corev1.Pod, error) {
	var pods []corev1.Pod
	err := retry.UntilSuccess(func() error {

limitations under the License.
*/

package async

import (
	"sync"
)

// Runner is an abstraction to make it easy to start and stop groups of things that can be
// described by a single function which waits on a channel close to exit.
type Runner struct {
	lock      sync.Mutex
	loopFuncs []func(stop chan struct{})
	stop      *chan struct{}
}

			// needed, based on the number of available
			// unlocked OS threads at the time waiter
			// calls runtime.LockOSThread(), but the goal
			// of doing this every time through the loop
			// is to race thread creation with v.fn(want)
			// being executed. Via the once boolean we
			// also encourage one in 5 waiters to return
			// locked after participating in only one
			// question response sequence. This allows the

	}

	// Disable GC for the duration of the test.
	// This avoids a potential GC deadlock when spinning in uninterruptible ASM below #49695.
	defer debug.SetGCPercent(debug.SetGCPercent(-1))
	// SetGCPercent waits until the mark phase is over, but the runtime
	// also preempts at the start of the sweep phase, so make sure that's
	// done too. See #49695.
	runtime.GC()

	// Temporarily rewind the stack and trigger SIGSETXID

    ExecHandleState getState();

    /**
     * Aborts the process, blocking until the process has exited. Does nothing if the process has already completed.
     */
    void abort();

    /**
     * Waits for the process to finish. Returns immediately if the process has already completed.
     *
     * @return result
     */
    ExecResult waitForFinish();

    /**

      threadUnexpectedException(t);
    }
  }

  //     /**
  //      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
  //      */
  //     public void await(AtomicBoolean flag) {
  //         await(flag, LONG_DELAY_MS);
  //     }

  //     /**
  //      * Spin-waits up to the specified timeout until flag becomes true.
  //      */

     */
    void add(T operation);

    /**
     * Cancels all queued operations in this queue.  Any operations that have started will be allowed to complete.
     */
    void cancel();

    /**
     * Waits for all previously added operations to complete.
     * <p>
     * On failure, some effort is made to cancel any operations that have not started.
     *

// when f will run, in which case Reset returns true, or schedules f
// to run again, in which case it returns false.
// When Reset returns false, Reset neither waits for the prior f to
// complete before returning nor does it guarantee that the subsequent
// goroutine running f does not run concurrently with the prior
// one. If the caller needs to know whether the prior execution of