*/
  @CheckForNull
  V getLiveValue(ReferenceEntry<K, V> entry, long now) {
    if (entry.getKey() == null) {
      return null;
    }
    V value = entry.getValueReference().get();
    if (value == null) {
      return null;
    }

    if (isExpired(entry, now)) {
      return null;
    }
    return value;
  }

  // expiration

    // manually add elements to avoid expansion
    // 1/3 null keys, 1/3 null values
    int originalCount = 1024;
    ReferenceEntry<Object, Object> entry = null;
    for (int i = 0; i < originalCount; i++) {
      Object key = new Object();
      Object value = (i % 3 == 0) ? null : new Object();
      int hash = map.hash(key);
      if (i % 3 == 1) {
        key = null;
      }

    // manually add elements to avoid expansion
    // 1/3 null keys, 1/3 null values
    int originalCount = 1024;
    ReferenceEntry<Object, Object> entry = null;
    for (int i = 0; i < originalCount; i++) {
      Object key = new Object();
      Object value = (i % 3 == 0) ? null : new Object();
      int hash = map.hash(key);
      if (i % 3 == 1) {
        key = null;
      }

    ListenableFuture<?> nullFuture = immediateFuture(null);
    ListenableFuture<?> transformedFuture = transform(nullFuture, constant(null), directExecutor());
    assertNull(getDone(transformedFuture));
  }

  @J2ktIncompatible // TODO(b/324550390): Enable
  public void testTransform_genericsHierarchy() throws Exception {
    ListenableFuture<FooChild> future = immediateFuture(null);
    final BarChild barChild = new BarChild();

    ListenableFuture<?> nullFuture = immediateFuture(null);
    ListenableFuture<?> transformedFuture = transform(nullFuture, constant(null), directExecutor());
    assertNull(getDone(transformedFuture));
  }

  @J2ktIncompatible // TODO(b/324550390): Enable
  public void testTransform_genericsHierarchy() throws Exception {
    ListenableFuture<FooChild> future = immediateFuture(null);
    final BarChild barChild = new BarChild();

   */
  @CheckForNull
  V getLiveValue(ReferenceEntry<K, V> entry, long now) {
    if (entry.getKey() == null) {
      return null;
    }
    V value = entry.getValueReference().get();
    if (value == null) {
      return null;
    }

    if (isExpired(entry, now)) {
      return null;
    }
    return value;
  }

  // expiration

   * removal operations, and these are reflected in the underlying map.
   *
   * <p>It's acceptable for the underlying map to contain null keys, and even null values provided
   * that the function is capable of accepting null input. The transformed map might contain null
   * values, if the function sometimes gives a null result.
   *
   * <p>The returned map is not thread-safe or serializable, even if the underlying map is.
   *

`he's perfectly idiotic!'  And she opened the door and went in.

  The door led right into a large kitchen, which was full of
smoke from one end to the other:  the Duchess was sitting on a
three-legged stool in the middle, nursing a baby; the cook was
leaning over the fire, stirring a large cauldron which seemed to
be full of soup.

  `There's certainly too much pepper in that soup!' Alice said to

        closeQuietly(entry.getKey(), entry.getValue());
      }
      clear();
      if (whenClosed != null) {
        whenClosed.countDown();
      }
    }

    void add(@CheckForNull Closeable closeable, Executor executor) {
      checkNotNull(executor);
      if (closeable == null) {
        return;
      }
      synchronized (this) {
        if (!closed) {

  private static String checkString(
      int length, int percent, String matchingChars, Random rand, boolean forceSlow, boolean web) {
    // Check whether we should ignore everything else and pull from the web.
    if (web) {
      StringBuilder builder = new StringBuilder(length);
      CharSamples sampler = new CharSamples(rand);
      for (int i = 0; i < length; i++) {
        int cp = sampler.nextCodePoint();