return 23;
    }

    @Override
    public String toString() {
      return "ClassWithTerribleHashCode(" + value + ")";
    }
  }

  @GwtIncompatible
  public void testBuildKeepingLast_collisions() {
    Map<ClassWithTerribleHashCode, Integer> expected = new LinkedHashMap<>();
    Builder<ClassWithTerribleHashCode, Integer> builder = new Builder<>();
    int size = 18;
    for (int i = 0; i < size; i++) {