}

    /**
     * @throws Exception
     */
    @Test
    public void testDecamelize() throws Exception {
        assertNull(StringUtil.decamelize(null));
        assertEquals("EMP", StringUtil.decamelize("Emp"));
        assertEquals("AAA_BBB", StringUtil.decamelize("aaaBbb"));
        assertEquals("AAA_BBB", StringUtil.decamelize("AaaBbb"));