* fallback}. {@link Function#apply} is not invoked until the primary input has failed, so if the
   * primary input succeeds, it is never invoked. If, during the invocation of {@code fallback}, an
   * exception is thrown, this exception is used as the result of the output {@code Future}.
   *
   * <p>Usage example:
   *
   * {@snippet :

  public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**
   * Returns the given string if it is nonempty; {@code null} otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is nonempty; {@code null} if it is empty or null
   */
  public static @Nullable String emptyToNull(@Nullable String string) {

- Apiserver repair controller is resilient to etcd errors during bootstrap and retries during 30 seconds before failing. ([#126671](https://github.com/kubernetes/kubernetes/pull/126671), [@fusida](https://github.com/fusida)) [SIG Network]

     */
    private fun Headers.varyFields(): Set<String> {
      var result: MutableSet<String>? = null
      for (i in 0 until size) {
        if (!"Vary".equals(name(i), ignoreCase = true)) {
          continue
        }

        val value = value(i)
        if (result == null) {
          result = TreeSet(String.CASE_INSENSITIVE_ORDER)
        }
        for (varyField in value.split(',')) {

    public void test_hook_normalExecution() {
        // Create a mock FwAssistantDirector
        FwAssistantDirector assistantDirector = createMockAssistantDirector();

        // Should not throw any exception during normal execution
        curtainFinallyHook.hook(assistantDirector);

        // Verify that the method completes without errors
        assertTrue(true); // Method completed successfully
    }

  - [Changes by Kind](#changes-by-kind)
    - [Deprecation](#deprecation)
    - [API Change](#api-change)
    - [Feature](#feature)
    - [Failing Test](#failing-test)
    - [Bug or Regression](#bug-or-regression)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies)
    - [Added](#added)
    - [Changed](#changed)

     *
     * @param s the input GSA pattern string
     * @return a regular expression pattern string, or empty string for comments/invalid patterns
     */
    protected String getFilterPath(final String s) {
        if (s.startsWith("#")) {
            return StringUtil.EMPTY;
        }
        if (s.startsWith(CONTAINS)) {
            final String v = s.substring(CONTAINS.length());

     * @throws ChildUrlsException if child URLs are discovered during processing
     * @throws DataStoreCrawlingException if an error occurs during crawling
     */
    protected String processRequest(final DataStoreParams paramMap, final Map<String, Object> dataMap, final String url,
            final CrawlerClient client) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();

        }
      }
    }
  }

  /**
   * Returns a string representation for this CacheBuilder instance. The exact form of the returned
   * string is not specified.
   */
  @Override
  public String toString() {
    MoreObjects.ToStringHelper s = MoreObjects.toStringHelper(this);
    if (initialCapacity != UNSET_INT) {

   *
   * @param q the blocking queue to be drained
   * @param buffer where to add the transferred elements
   * @param numElements the number of elements to be waited for
   * @param timeout how long to wait before giving up
   * @return the number of elements transferred
   * @throws InterruptedException if interrupted while waiting
   * @since 33.4.0 (but since 28.0 in the JRE flavor)
   */
  @CanIgnoreReturnValue