assertThat(Iterators.getLast(iterator, "bar")).isEqualTo("bar");
  }

  public void testGetLast_withDefault_empty_null() {
    Iterator<String> iterator = emptyIterator();
    assertThat(Iterators.<@Nullable String>getLast(iterator, null)).isNull();
  }

  public void testGetLast_withDefault_two() {
    Iterator<String> iterator = asList("foo", "bar").iterator();

    assertThat(Iterators.getLast(iterator, "bar")).isEqualTo("bar");
  }

  public void testGetLast_withDefault_empty_null() {
    Iterator<String> iterator = emptyIterator();
    assertThat(Iterators.<@Nullable String>getLast(iterator, null)).isNull();
  }

  public void testGetLast_withDefault_two() {
    Iterator<String> iterator = asList("foo", "bar").iterator();

     * @return the new first entry for the table
     */
    @GuardedBy("this")
    @Nullable E removeFromChain(E first, E entry) {
      int newCount = count;
      E newFirst = entry.getNext();
      for (E e = first; e != entry; e = e.getNext()) {
        E next = copyEntry(e, newFirst);
        if (next != null) {
          newFirst = next;
        } else {
          newCount--;
        }
      }

     * @return the new first entry for the table
     */
    @GuardedBy("this")
    @Nullable E removeFromChain(E first, E entry) {
      int newCount = count;
      E newFirst = entry.getNext();
      for (E e = first; e != entry; e = e.getNext()) {
        E next = copyEntry(e, newFirst);
        if (next != null) {
          newFirst = next;
        } else {
          newCount--;
        }
      }

   * @return the last element of {@code iterator}
   * @since 3.0
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T getLast(
      Iterator<? extends T> iterator, @ParametricNullness T defaultValue) {
    return iterator.hasNext() ? getLast(iterator) : defaultValue;
  }

  /**
   * Calls {@code next()} on {@code iterator}, either {@code numberToAdvance} times or until {@code

   * @return the last element of {@code iterator}
   * @since 3.0
   */
  @ParametricNullness
  public static <T extends @Nullable Object> T getLast(
      Iterator<? extends T> iterator, @ParametricNullness T defaultValue) {
    return iterator.hasNext() ? getLast(iterator) : defaultValue;
  }

  /**
   * Calls {@code next()} on {@code iterator}, either {@code numberToAdvance} times or until {@code

                n++;
                final int size = chain.size();
                final int cost = chain.getCreditCost();
                final CommonServerMessageBlockRequest next = chain.getNext();
                if (log.isTraceEnabled()) {
                    log.trace(String.format("%s costs %d avail %d (%s)", chain.getClass().getName(), cost, this.credits.availablePermits(),
                            this.name));

            value = "http:" + urlStr;
        } else {
            value = urlStr;
        }
        try {
            final URL url = new URL(value);
            final String host = url.getHost();
            if (StringUtil.isBlank(host) || "http".equalsIgnoreCase(host) || "https".equalsIgnoreCase(host)) {
                return false;
            }
        } catch (final MalformedURLException e) {

     * @return the last element, or null if the collection is empty
     * @since Java 21
     */
    public static <E> E getLast(final SequencedCollection<E> collection) {
        return collection.isEmpty() ? null : collection.getLast();
    }

    /**
     * Adds an element to the beginning of a sequenced collection.
     *
     * @param <E> the element type

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

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

    @Override
    public @Nullable E peekFirst() {
      synchronized (mutex) {
        return delegate().peekFirst();
      }
    }