}

  @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().offerFirst(e);
  }

    assertEquals("foo", Iterators.getLast(iterator, "bar"));
  }

  public void testGetLast_withDefault_empty() {
    Iterator<String> iterator = emptyIterator();
    assertEquals("bar", Iterators.getLast(iterator, "bar"));
  }

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

    int hash = entry.getHash();
    segmentFor(hash).reclaimValue(entry.getKey(), hash, valueReference);
  }

  void reclaimKey(ReferenceEntry<K, V> entry) {
    int hash = entry.getHash();
    segmentFor(hash).reclaimKey(entry, hash);
  }

  /**
   * This method is a convenience for testing. Code should call {@link Segment#getLiveValue}
   * instead.
   */

        }
        return sessionId;
    }

    public synchronized void store(final String sessionId, final boolean create) {
        CrawlingInfo crawlingInfo = create ? null : getCrawlingInfoService().getLast(sessionId);
        if (crawlingInfo == null) {
            crawlingInfo = new CrawlingInfo(sessionId);
            try {
                getCrawlingInfoService().store(crawlingInfo);
            } catch (final Exception e) {

    }

    @Override
    public boolean hasNext() {
      return !stack.isEmpty();
    }

    @Override
    public T next() {
      Iterator<T> itr = stack.getLast(); // throws NSEE if empty
      T result = checkNotNull(itr.next());
      if (!itr.hasNext()) {
        stack.removeLast();
      }
      Iterator<T> childItr = children(result).iterator();

  void setValueReference(ValueReference<K, V> valueReference);

  /** Returns the next entry in the chain. */
  @CheckForNull
  ReferenceEntry<K, V> getNext();

  /** Returns the entry's hash. */
  int getHash();

  /** Returns the key for this entry. */
  @CheckForNull
  K getKey();

  /*
   * Used by entries that use access order. Access entries are maintained in a doubly-linked list.

        });
    }

    public List<CrawlingInfoParam> getLastCrawlingInfoParamList(final String sessionId) {
        final CrawlingInfo crawlingInfo = getLast(sessionId);
        if (crawlingInfo == null) {
            return Collections.emptyList();
        }
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

    assertEquals("foo", Iterators.getLast(iterator, "bar"));
  }

  public void testGetLast_withDefault_empty() {
    Iterator<String> iterator = emptyIterator();
    assertEquals("bar", Iterators.getLast(iterator, "bar"));
  }

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

      assertEquals(hashOne, entryOne.getHash());
      assertNull(entryOne.getNext());
      assertSame(valueOne, copyOne.getValueReference().get());
      assertConnected(map, copyOne, entryTwo);

      ReferenceEntry<Object, Object> copyTwo = map.copyEntry(entryTwo, copyOne);
      assertSame(keyTwo, copyTwo.getKey());
      assertEquals(hashTwo, copyTwo.getHash());
      assertSame(copyOne, copyTwo.getNext());

      assertEquals(hashOne, entryOne.getHash());
      assertNull(entryOne.getNext());
      assertSame(valueOne, copyOne.getValueReference().get());
      assertConnected(map, copyOne, entryTwo);

      ReferenceEntry<Object, Object> copyTwo = map.copyEntry(entryTwo, copyOne);
      assertSame(keyTwo, copyTwo.getKey());
      assertEquals(hashTwo, copyTwo.getHash());
      assertSame(copyOne, copyTwo.getNext());