public Iterator<E> descendingIterator() {
    return delegate().descendingIterator();
  }

  @Override
  @ParametricNullness
  public E getFirst() {
    return delegate().getFirst();
  }

  @Override
  @ParametricNullness
  public E getLast() {
    return delegate().getLast();
  }

  @CanIgnoreReturnValue // TODO(cpovirk): Consider removing this?
  @Override
  public boolean offerFirst(@ParametricNullness E e) {

      return delegate.pollLast();
    }

    @Override
    public E getFirst() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.getFirst();
    }

    @Override
    public E getLast() {
      assertTrue(Thread.holdsLock(mutex));
      return delegate.getLast();
    }

    @Override
    public @Nullable E peekFirst() {

    assertThat(Iterables.<@Nullable String>getFirst(iterable, null)).isNull();
  }

  public void testGetFirst_withDefault_multiple() {
    Iterable<String> iterable = asList("foo", "bar");
    assertThat(Iterables.getFirst(iterable, "qux")).isEqualTo("foo");
  }

  public void testGetLast_list() {
    List<String> list = newArrayList("a", "b", "c");
    assertThat(Iterables.getLast(list)).isEqualTo("c");
  }

   *
   * <p><b>Java 21+ users:</b> if {code iterable} is a {@code SequencedCollection} (e.g., any list),
   * consider using {@code collection.getFirst()} instead. Note that if the collection is empty,
   * {@code getFirst()} throws a {@code NoSuchElementException}, while this method returns the
   * default value.
   *
   * @param defaultValue the default value to return if the iterable is empty

- `kube-apiserver`: Improved memory use when performing `GetList` on the cache. ([#116327](https://github.com/kubernetes/kubernetes/pull/116327), [@sxllwx](https://github.com/sxllwx))
- `kube-controller-manager` and `cloud-controller-manager` have changed the

   *
   * <p><b>Java 21+ users:</b> if {code iterable} is a {@code SequencedCollection} (e.g., any list),
   * consider using {@code collection.getFirst()} instead. Note that if the collection is empty,
   * {@code getFirst()} throws a {@code NoSuchElementException}, while this method returns the
   * default value.
   *
   * @param defaultValue the default value to return if the iterable is empty

        if (violation.getHumanExplanation().startsWith(SINCE_ERROR_MESSAGE)) {
            // We want to keep @since nagging for new methods, unless it's `getX` or `getIsX` method that replaces `isX` boolean method.
            return isCurrentGetterThatReplacesBooleanIsGetter(jApiMethod, currentAccessors) || isKotlinBooleanSourceCompatibilityMethod(jApiMethod, currentAccessors);
        }

    assertThat(HostAndPort.fromString("[::1]:80").requireBracketsForIPv6().getHost())
        .isEqualTo("::1");
    // Non-bracketed non-IPv6 works fine.
    assertThat(HostAndPort.fromString("x").requireBracketsForIPv6().getHost()).isEqualTo("x");
    assertThat(HostAndPort.fromString("x:80").requireBracketsForIPv6().getHost()).isEqualTo("x");

    assertThat(HostAndPort.fromString("[::1]:80").requireBracketsForIPv6().getHost())
        .isEqualTo("::1");
    // Non-bracketed non-IPv6 works fine.
    assertThat(HostAndPort.fromString("x").requireBracketsForIPv6().getHost()).isEqualTo("x");
    assertThat(HostAndPort.fromString("x:80").requireBracketsForIPv6().getHost()).isEqualTo("x");

        // Assert - Verify URL components
        assertEquals("smb", url1.getProtocol());
        assertEquals("host", url1.getHost());
        assertEquals(445, url1.getPort());
        assertEquals("/share", url1.getPath());

        assertEquals("smb", url2.getProtocol());
        assertEquals("host", url2.getHost());
        assertEquals(1234, url2.getPort());
        assertEquals("/share/file.txt", url2.getPath());