return v3();
                }));
    expectReplacement(entry(k0(), v3()));
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testComputeIfPresent_functionReturnsNull() {
    assertNull(
        "computeIfPresent(present, returnsNull) should return null",
        getMap()
            .computeIfPresent(
                k0(),
                (k, v) -> {