protected static boolean assertFalse(String string) {
        return string == null
            || StringUtils.EMPTY.equals(string)
            || StringUtils.FALSE.equalsIgnoreCase(string)
            || StringUtils.NULL.equals(string);
    }
@Test
    public void assertFalse() {
        Assert.assertTrue(ConfigValueHelper.assertFalse(null));
        Assert.assertTrue(ConfigValueHelper.assertFalse(""));
        Assert.assertTrue(ConfigValueHelper.assertFalse("fALse"));
        Assert.assertTrue(ConfigValueHelper.assertFalse("null"));
        Assert.assertFalse(ConfigValueHelper.assertFalse("xasda"));
    }