public static boolean isEmpty(Collection<?> col) {
        return !isNotEmpty(col);
    }
@Test
    public void testIsEmptyWithCollection() {
        List<String> emptyCollection = new ArrayList<>();
        List<String> filledCollection = new ArrayList<>();

        filledCollection.add("Foo");
        filledCollection.add("Bar");

        Assertions.assertTrue(CollectionUtils.isEmpty(emptyCollection));
        Assertions.assertFalse(CollectionUtils.isEmpty(filledCollection));
    }