*     null} is treated as the four-character string {@code "null"}.
   * @param args the arguments to be substituted into the message template. The first argument
   *     specified is substituted for the first occurrence of {@code "%s"} in the template, and so
   *     forth. A {@code null} argument is converted to the four-character string {@code "null"};

   *   public boolean isDone() {
   *     return ref.get() == null;
   *   }
   * });
   * }
   *
   * @throws RuntimeException if timed out or interrupted while waiting
   */
  public static void awaitClear(WeakReference<?> ref) {
    awaitDone(() -> ref.get() == null);
  }

  /**
   * Tries to perform a "full" garbage collection cycle (including processing of weak references and

        // Then
        assertNotNull(result);
        assertEquals("", result);
    }

    @Test
    @DisplayName("Should handle null byte array")
    void testToHexStringNull() {
        // When/Then
        assertThrows(NullPointerException.class, () -> {
            Hexdump.toHexString(null);
        });
    }

    @Test
    @DisplayName("Should convert byte array to hex string with offset and length")

            NetworkInterfaceInfo info = NetworkInterfaceInfo.decode(buffer, bufferIndex);
            if (info != null) {
                interfaces.add(info);
            }

            if (next == 0) {
                // Last entry - advance by the full structure size
                bufferIndex += 152;
                break;
            }

            // Move to next entry based on Next offset

     * @return the normalized content, or empty string if content is null
     */
    public String getContent(final CrawlingConfig crawlingConfig, final ResponseData responseData, final String content,
            final Map<String, Object> dataMap) {
        if (content == null) {
            return StringUtil.EMPTY; // empty
        }

        if (crawlingConfig != null) {

                try {
                    if (externalContext != null) {
                        requestOpt.ifPresent(externalContext::setRequest);
                        responseOpt.ifPresent(externalContext::setResponse);
                    }
                    return searcher.search(query, reqParams, userBean);
                } finally {
                    if (externalContext != null) {
                        externalContext.setRequest(null);

                        <OpenSearchDescription xmlns="http://a9.com/-/spec/opensearch/1.1/">
                          <ShortName>Fess</ShortName>
                          <Description>Full Text Search for Your Documents.</Description>
                          <Tags>Full Text Search</Tags>
                          <Contact>******@****.***</Contact>
                          <SearchForm>http://localhost:8080/fess/</SearchForm>

    node.thread = null; // mark as 'deleted'
    restart:
    while (true) {
      Waiter pred = null;
      Waiter curr = waitersField;
      if (curr == Waiter.TOMBSTONE) {
        return; // give up if someone is calling complete
      }
      Waiter succ;
      while (curr != null) {
        succ = curr.next;
        if (curr.thread != null) { // we aren't unlinking this node, update pred.

        // For this test, we'll focus on the documentExpires fallback logic
        // since creating full CrawlingConfig mocks would require implementing many abstract methods
        Date result = crawlingInfoHelper.documentExpires != null ? new Date(crawlingInfoHelper.documentExpires) : null;
        assertNotNull(result);
        assertEquals(currentTime + 5000, result.getTime());
    }

    @Test

     */
    if (result == null) {
      return null;
    } else {
      return (V) result;
    }
  }

  static @Nullable Object get(
      @Nullable Object hashTableObject,
      @Nullable Object[] alternatingKeysAndValues,
      int size,
      int keyOffset,
      @Nullable Object key) {
    if (key == null) {
      return null;
    } else if (size == 1) {