Download a file, print its headers, and print its response body as a string.

The `string()` method on response body is convenient and efficient for small documents. But if the response body is large (greater than 1 MiB), avoid `string()` because it will load the entire document into memory. In that case, prefer to process the body as a stream.

=== ":material-language-kotlin: Kotlin"
    ```kotlin

 * its simplicity and ability to accommodate interruption.
 *
 * @since 26.0
 */
@J2ktIncompatible
@GwtIncompatible
public final class ExecutionSequencer {

  private ExecutionSequencer() {}

  /** Creates a new instance. */
  public static ExecutionSequencer create() {
    return new ExecutionSequencer();
  }

  /** This reference acts as a pointer tracking the head of a linked list of ListenableFutures. */

            return responseData;
        } catch (final ChildUrlsException e) {
            return null;
        }
    }

    /**
     * Gets or creates an FTP client for the specified FTP information.
     * This method either reuses an existing client from the queue or creates a new one.
     * It handles SSL/TLS configuration, authentication, and various FTP client settings.
     *

    @BeforeEach
    void setUp() {
        securityDescriptor = new SecurityDescriptor();
        testBuffer = new byte[1024];
    }

    @Test
    @DisplayName("Test default constructor creates empty SecurityDescriptor")
    void testDefaultConstructor() {
        SecurityDescriptor sd = new SecurityDescriptor();
        assertEquals(0, sd.getType());
        assertNull(sd.getAces());

  static final String ERROR_SELF_LOOP = "self-loops are not allowed";
  static final String ERROR_ADDED_SELF_LOOP = "Should not be allowed to add a self-loop edge.";

  /** Creates and returns an instance of the graph to be tested. */
  abstract Graph<Integer> createGraph();

  /**
   * A proxy method that adds the node {@code n} to the graph being tested. In case of Immutable

  @GwtIncompatible // reflection
  @AndroidIncompatible // relies on assumptions about OpenJDK
  public void testNewHashMapWithExpectedSize_wontGrow() throws Exception {
    // before jdk7u40: creates one-bucket table
    // after  jdk7u40: creates empty table
    assertThat(bucketsOf(Maps.newHashMapWithExpectedSize(0))).isAtMost(1);

    for (int size = 1; size < 200; size++) {
      assertWontGrow(
          size,

        other is AggregateEventListener -> other.eventListeners
        else -> arrayOf(other)
      }

    return AggregateEventListener(left + right)
  }

  fun interface Factory {
    /**
     * Creates an instance of the [EventListener] for a particular [Call]. The returned
     * [EventListener] instance will be used during the lifecycle of [call].
     *

   *
   * @since 2.0
   */
  public static final class Builder<K, V> extends ImmutableMap.Builder<K, V> {
    /**
     * Creates a new builder. The returned builder is equivalent to the builder generated by {@link
     * ImmutableBiMap#builder}.
     */
    public Builder() {
      super();
    }

    Builder(int size) {

   *
   * @param position position of the element to return
   * @return the element at the specified position in {@code iterable}
   * @throws IndexOutOfBoundsException if {@code position} is negative or greater than or equal to
   *     the size of {@code iterable}
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T get(Iterable<T> iterable, int position) {
    checkNotNull(iterable);

    @Resource
    protected ContentLengthHelper contentLengthHelper;

    /** The SMB authentication holder. */
    protected volatile SmbAuthenticationHolder smbAuthenticationHolder;

    /**
     * Creates a new SmbClient instance.
     */
    public SmbClient() {
        super();
    }

    @Override
    public synchronized void init() {
        if (smbAuthenticationHolder != null) {