}));
    expectUnchanged();
  }

  @MapFeature.Require({SUPPORTS_PUT, ALLOWS_NULL_KEYS})
  @CollectionSize.Require(absent = ZERO)
  public void testComputeIfPresent_nullKeySupportedPresent() {
    initMapWithNullKey();
    assertEquals(
        "computeIfPresent(null, function) should return new value",
        v3(),
        getMap()
            .computeIfPresent(