assertEquals(ImmutableMap.of(), cache.getAllPresent(ImmutableList.<Integer>of()));
    stats = cache.stats();
    assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());

    assertEquals(ImmutableMap.of(), cache.getAllPresent(asList(1, 2, 3)));
    stats = cache.stats();

    assertEquals(ImmutableMap.of(), cache.getAllPresent(ImmutableList.<Integer>of()));
    stats = cache.stats();
    assertEquals(0, stats.missCount());
    assertEquals(0, stats.loadSuccessCount());
    assertEquals(0, stats.loadExceptionCount());
    assertEquals(0, stats.hitCount());

    assertEquals(ImmutableMap.of(), cache.getAllPresent(asList(1, 2, 3)));
    stats = cache.stats();

 * effort required to implement this interface.
 *
 * <p>To implement a cache, the programmer needs only to extend this class and provide an
 * implementation for the {@link #put} and {@link #getIfPresent} methods. {@link #getAllPresent} is
 * implemented in terms of {@link #getIfPresent}; {@link #putAll} is implemented in terms of {@link
 * #put}, {@link #invalidateAll(Iterable)} is implemented in terms of {@link #invalidate}. The

  }

  public void testGetAllPresent() throws ExecutionException {
    when(mock.getAllPresent(ImmutableList.of("key")))
        .thenReturn(ImmutableMap.of("key", Boolean.TRUE));
    assertEquals(
        ImmutableMap.of("key", Boolean.TRUE), forward.getAllPresent(ImmutableList.of("key")));
  }

  public void testInvalidate() {
    forward.invalidate("key");

   * differ: <? extends Object> means "non-null types," while <?> means "all types."
   */
  public ImmutableMap<K, V> getAllPresent(Iterable<? extends Object> keys) {
    return delegate().getAllPresent(keys);
  }

  /** @since 11.0 */
  @Override
  public void put(K key, V value) {
    delegate().put(key, value);
  }

  /** @since 12.0 */
  @Override

   * differ: <? extends Object> means "non-null types," while <?> means "all types."
   */
  public ImmutableMap<K, V> getAllPresent(Iterable<? extends Object> keys) {
    return delegate().getAllPresent(keys);
  }

  /** @since 11.0 */
  @Override
  public void put(K key, V value) {
    delegate().put(key, value);
  }

  /** @since 12.0 */
  @Override

 * effort required to implement this interface.
 *
 * <p>To implement a cache, the programmer needs only to extend this class and provide an
 * implementation for the {@link #put} and {@link #getIfPresent} methods. {@link #getAllPresent} is
 * implemented in terms of {@link #getIfPresent}; {@link #putAll} is implemented in terms of {@link
 * #put}, {@link #invalidateAll(Iterable)} is implemented in terms of {@link #invalidate}. The

  }

  public void testGetAllPresent() throws ExecutionException {
    when(mock.getAllPresent(ImmutableList.of("key")))
        .thenReturn(ImmutableMap.of("key", Boolean.TRUE));
    assertEquals(
        ImmutableMap.of("key", Boolean.TRUE), forward.getAllPresent(ImmutableList.of("key")));
  }

  public void testInvalidate() {
    forward.invalidate("key");

          @Override
          public @Nullable Object getIfPresent(Object key) {
            return null;
          }
        };

    assertEquals(ImmutableMap.of(), cache.getAllPresent(ImmutableList.of(new Object())));
  }

  public void testGetAllPresent_cached() {
    final Object cachedKey = new Object();
    final Object cachedValue = new Object();
    Cache<Object, Object> cache =

          @Override
          public @Nullable Object getIfPresent(Object key) {
            return null;
          }
        };

    assertEquals(ImmutableMap.of(), cache.getAllPresent(ImmutableList.of(new Object())));
  }

  public void testGetAllPresent_cached() {
    final Object cachedKey = new Object();
    final Object cachedValue = new Object();
    Cache<Object, Object> cache =