}

  @J2ktIncompatible
  @GwtIncompatible // SerializableTester
  public void testForPredicateSerializable() {
    checkCanReserialize(Functions.forPredicate(Predicates.equalTo(5)));
  }

  public void testConstant() {
    Function<@Nullable Object, Object> f = Functions.<Object>constant("correct");
    assertEquals("correct", f.apply(new Object()));
    assertEquals("correct", f.apply(null));

        assertNull(nbtAddress.getMacAddress(mockContext)); // Default value before update
        verify(mockNameServiceClient).getNbtAllByAddress(any(NetbiosAddress.class));
    }

    @Test
    void testConstants() {
        // Test public static final constants
        assertEquals("*\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000\u0000",
                NbtAddress.ANY_HOSTS_NAME);