return valueField;
  }

  /** Returns the head of the listener stack, using a volatile read. */
  final @Nullable Listener listeners() {
    return listenersField;
  }

  /** Releases all threads in the {@link #waitersField} list, and clears the list. */
  final void releaseWaiters() {
    Waiter head = gasWaiters(Waiter.TOMBSTONE);
    for (Waiter currentWaiter = head; currentWaiter != null; currentWaiter = currentWaiter.next) {

    return valueField;
  }

  /** Returns the head of the listener stack, using a volatile read. */
  final @Nullable Listener listeners() {
    return listenersField;
  }

  /** Releases all threads in the {@link #waitersField} list, and clears the list. */
  final void releaseWaiters() {
    Waiter head = gasWaiters(Waiter.TOMBSTONE);
    for (Waiter currentWaiter = head; currentWaiter != null; currentWaiter = currentWaiter.next) {

    List<E> head = list.subList(0, size - 1);
    List<E> tail = list.subList(1, size);
    assertEquals(list.get(0), copy.get(0));
    assertEquals(list.get(size - 1), copy.get(size - 1));
    assertEquals(list.get(1), tail.get(0));
    assertEquals(list.get(size - 1), tail.get(size - 2));
    assertEquals(list.get(0), head.get(0));
    assertEquals(list.get(size - 2), head.get(size - 2));

    Node<K, V> head;
    Node<K, V> tail;
    int count;

    KeyList(Node<K, V> firstNode) {
      this.head = firstNode;
      this.tail = firstNode;
      firstNode.previousSibling = null;
      firstNode.nextSibling = null;
      this.count = 1;
    }
  }

  private transient @Nullable Node<K, V> head; // the head for all keys

        // ## Arrange ##
        final String url = "http://example.com";

        // ## Act ##
        final CurlRequest request = Curl.head(url);

        // ## Assert ##
        assertNotNull(request);
        assertEquals(Method.HEAD, request.method());
    }

    @Test
    public void test_OptionsFactoryMethod() {
        // ## Arrange ##
        final String url = "http://example.com";

    steps:
      - name: Get Secrets
        uses: gradle/actions-internal/get-aws-secrets@v1
        if: (github.event_name != 'pull_request' && github.repository_owner == 'gradle') || github.event.pull_request.head.repo.full_name == github.repository
        with:
          role-to-assume: arn:aws:iam::992382829881:role/GHASecrets_gradle_all
          secret-ids: |

      - name: Install Groovy
        run: sudo apt-get install groovy
      - name: List PR commits
        run: |
          git log --pretty=format:"%H" ${{ github.event.pull_request.base.sha }}..${{ github.event.pull_request.head.sha }} > pr_commits.txt
      - name: Check PR commits
        id: run_check
        run: |
          groovy .github/workflows/CheckBadMerge.groovy pr_commits.txt > output.txt 2>&1
      - name: Read output file

        "https://api.github.com/repos/gradle/gradle$endpoint" \
        -d "$data" \
        -w "\n%{http_code}" \
        2>/dev/null)

    local http_code=$(echo "$response" | tail -n1)
    local body=$(echo "$response" | head -n -1)

    if [[ "$http_code" -ge 400 ]]; then
        printf "Error: HTTP %s - %s\n" "$http_code" "$body" >&2
        exit 1
    fi

    echo "$body"
}

main() {
    WRAPPER_VERSION="${1:-}"

        throw new CrawlerSystemException("GET method is not supported.");
    }

    /**
     * Performs a HEAD request.
     * @param url The URL to request.
     * @return The ResponseData.
     */
    protected ResponseData doHead(final String url) {
        throw new CrawlerSystemException("HEAD method is not supported.");
    }

    /**
     * Performs a POST request.
     * @param url The URL to request.

### Transition Status