return null;
          }
        };

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

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