checkNotNull(valueComparator);
    return Comparator.<Optional<T>, @Nullable T>comparing(
        o -> orElseNull(o), Comparator.nullsLast(valueComparator));
  }

  // For discussion of why this exists, see the Android flavor.
  private static <T> @Nullable T orElseNull(Optional<T> optional) {
    return optional.orElse(null);
  }

  /**

  is <<not>> installed on localhost. This allows the popular pattern of starting
  a server container in-JVM, running tests against it, and shutting it down.

** SCM mojos

  See below for discussion on SCM-related operations. Any mojo which
  carries out some analysis or other interaction with a SCM system
  will likely be unavailable when in offline mode.


* Implications for Subsystems

** Maven-Wagon

  }

  public <T> void testWhere_mapFromBoundedWildcard() {
    Type subtype = new TypeCapture<TypedKeyMap<T>>() {}.capture();
    // TODO(benyu): This should check equality to an expected value, see discussion in cl/98674873
    Type unused =
        new TypeResolver()
            .where(
                new TypeCapture<Map<Integer, T>>() {}.capture(),

      this.left = null;
      this.right = null;
    }

    /** Constructor for the header node. */
    AvlNode() {
      this.elem = null;
      this.elemCount = 1;
    }

    // For discussion of pred() and succ(), see the comment on the pred and succ fields.

    private AvlNode<E> pred() {
      return requireNonNull(pred);
    }

    private AvlNode<E> succ() {
      return requireNonNull(succ);

  }

  private static final class AboveAll extends Cut<Comparable<?>> {
    private static final AboveAll INSTANCE = new AboveAll();

    private AboveAll() {
      // For discussion of "", see BelowAll.
      super("");
    }

    @Override
    Comparable<?> endpoint() {
      throw new IllegalStateException("range unbounded on this side");
    }

    @Override

 * this class may be obtained with {@link #copyOf(ValueGraph)}.
 *
 * <p>See the Guava User's Guide's <a
 * href="https://github.com/google/guava/wiki/GraphsExplained#immutable-implementations">discussion
 * of the {@code Immutable*} types</a> for more information on the properties and guarantees
 * provided by this class.
 *
 * @author James Sexton
 * @author Jens Nyman
 * @param <N> Node parameter type

   *
   * <p>Cancelling the pipeline will not cancel {@code future}, so that the pipeline can access its
   * value in order to close it.
   *
   * @param future the future to create the {@code ClosingFuture} from. For discussion of the
   *     future's result type {@code C}, see {@link DeferredCloser#eventuallyClose(Object,
   *     Executor)}.
   * @param closingExecutor the future's result will be closed on this executor

    @ParametricNullness
    public V setValue(@ParametricNullness V value) {
      updateIndex();
      if (index == ABSENT) {
        HashBiMap.this.put(key, value);
        return unsafeNull(); // See the discussion in getValue().
      }
      /*
       * The cast is safe because updateIndex found the entry for this key. (If it hadn't, then we

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      if (delegate != null) {
        return uncheckedCastNullableTToT(delegate.put(key, value)); // See discussion in getValue().
      }
      updateLastKnownIndex();
      if (lastKnownIndex == -1) {
        put(key, value);
        return unsafeNull(); // See discussion in getValue().
      } else {
        V old = value(lastKnownIndex);
        CompactHashMap.this.setValue(lastKnownIndex, value);