public void testNulls() {
    NullPointerTester tester = new NullPointerTester();

    tester.testAllPublicStaticMethods(InetAddresses.class);
  }

  public void testForStringBogusInput() {
    ImmutableSet<String> bogusInputs =
        ImmutableSet.of(
            "",
            "016.016.016.016",
            "016.016.016",
            "016.016",
            "016",