* <h3>Extension</h3>
 *
 * If you want a class like {@code FluentFuture} but with extra methods, we recommend declaring your
 * own subclass of {@link ListenableFuture}, complete with a method like {@link #from} to adapt an
 * existing {@code ListenableFuture}, implemented atop a {@link ForwardingListenableFuture} that
 * forwards to that future and adds the desired methods.
 *
 * @since 23.0
 */

    long halfTimeoutNanos = unit.toNanos(timeout) / 2;
    // Disable new tasks from being submitted
    service.shutdown();
    try {
      // Wait for half the duration of the timeout for existing tasks to terminate
      if (!service.awaitTermination(halfTimeoutNanos, TimeUnit.NANOSECONDS)) {
        // Cancel currently executing tasks
        service.shutdownNow();

### Beta APIs Off by Default

[New beta APIs will not be enabled in clusters by default](https://github.com/kubernetes/enhancements/issues/3136).
Existing beta APIs and new versions of existing beta APIs, will continue to be enabled by default.

### Signing Release Artifacts

- Fix: avoid nil-pointer panic when checking the frontend IP configuration ([#101739](https://github.com/kubernetes/kubernetes/pull/101739), [@nilo19](https://github.com/nilo19)) [SIG Cloud Provider]
- Fix: delete non existing disk issue ([#102083](https://github.com/kubernetes/kubernetes/pull/102083), [@andyzhangx](https://github.com/andyzhangx)) [SIG Cloud Provider]

// the type may not be determined yet. In these cases, a byte-slice is
// used.
type Value struct {
	value any
}

// Missing is used to indicate a non-existing value.
type Missing struct{}

// MarshalJSON provides json marshaling of values.
func (v Value) MarshalJSON() ([]byte, error) {
	if b, ok := v.ToBytes(); ok {
		return b, nil
	}
	return json.Marshal(v.value)

		format.mayOnlyBe(FormatPAX)
	}
	if len(h.PAXRecords) > 0 {
		for k, v := range h.PAXRecords {
			switch _, exists := paxHdrs[k]; {
			case exists:
				continue // Do not overwrite existing records
			case h.Typeflag == TypeXGlobalHeader:
				paxHdrs[k] = v // Copy all records
			case !basicKeys[k] && !strings.HasPrefix(k, paxGNUSparse):
				paxHdrs[k] = v // Ignore local records that may conflict
			}

  /**
   * Returns an iterator over the URLs in this cache. This iterator doesn't throw
   * `ConcurrentModificationException`, but if new responses are added while iterating, their URLs
   * will not be returned. If existing responses are evicted during iteration, they will be absent
   * (unless they were already returned).
   *
   * The iterator supports [MutableIterator.remove]. Removing a URL from the iterator evicts the

		return errDiskNotFound
	}

	// Marshal and write to disk.
	formatData, err := json.Marshal(format)
	if err != nil {
		return err
	}

	tmpFormat := mustGetUUID()

	// Purge any existing temporary file, okay to ignore errors here.
	defer disk.Delete(context.TODO(), minioMetaBucket, tmpFormat, DeleteOptions{
		Recursive: false,
		Immediate: false,
	})

	// write to unique file.

	return &Writer{cw: &countWriter{w: bufio.NewWriter(w)}}
}

// SetOffset sets the offset of the beginning of the zip data within the
// underlying writer. It should be used when the zip data is appended to an
// existing file, such as a binary executable.
// It must be called before any data is written.
func (w *Writer) SetOffset(n int64) {
	if w.cw.count != 0 {
		panic("zip: SetOffset called after data was written")
	}
	w.cw.count = n

   * put()} and {@code putAll()} methods throw an {@link IllegalArgumentException}. Similarly, the
   * map's entries have a {@link Entry#setValue} method that throws an {@link
   * IllegalArgumentException} when the existing key and the provided value don't satisfy the
   * predicate.
   *
   * <p>When methods such as {@code removeAll()} and {@code clear()} are called on the filtered map