}

  public void testGetNext_withDefault_two() {
    Iterator<String> iterator = asList("foo", "bar").iterator();
    assertEquals("foo", Iterators.getNext(iterator, "x"));
  }

  public void testGetLast_basic() {
    List<String> list = newArrayList();
    list.add("a");
    list.add("b");
    assertEquals("b", getLast(list.iterator()));
  }

  }

  public void testGetNext_withDefault_two() {
    Iterator<String> iterator = asList("foo", "bar").iterator();
    assertEquals("foo", Iterators.getNext(iterator, "x"));
  }

  public void testGetLast_basic() {
    List<String> list = newArrayList();
    list.add("a");
    list.add("b");
    assertEquals("b", getLast(list.iterator()));
  }

     */
    @GuardedBy("this")
    @CheckForNull
    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--;
        }
      }

     */
    @GuardedBy("this")
    @CheckForNull
    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

            while ( chain != null ) {
                n++;
                int size = chain.size();
                int cost = chain.getCreditCost();
                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));

        this.isExists = false;

        try {
            if ( this.url.getHost().length() == 0 ) {}
            else if ( this.fileLocator.getShare() == null ) {
                if ( this.fileLocator.getType() == TYPE_WORKGROUP ) {
                    getContext().getNameServiceClient().getByName(this.url.getHost(), true);
                }
                else {

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

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

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

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

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

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

                    if (!first) {
                        buf.append(',');
                    }
                    first = false;

                    buf.append("{\"text\":\"").append(StringEscapeUtils.escapeJson(item.getText())).append('\"');
                    buf.append(",\"labels\":[");
                    for (int i = 0; i < item.getTags().length; i++) {
                        if (i > 0) {
                            buf.append(',');