public static boolean isNotEmpty(final CharSequence cs) {
        return !isEmpty(cs);
    }
@Test
    public void testIsNotEmpty() {
        assertThat(StringUtils.isNotEmpty(null)).isFalse();
        assertThat(StringUtils.isNotEmpty("abc")).isTrue();
        assertThat(StringUtils.isNotEmpty("")).isFalse();
        assertThat(StringUtils.isNotEmpty(" ")).isTrue();
    }