public static boolean isNotBlank(String str) {
        return !isBlank(str);
    }
@Test
    public void testIsNotBlank() {
        assertThat(StringUtils.isNotBlank(null)).isFalse();
        assertThat(StringUtils.isNotBlank("abc")).isTrue();
        assertThat(StringUtils.isNotBlank("")).isFalse();
        assertThat(StringUtils.isNotBlank(" ")).isFalse();
    }