@Test
    public void test_constantsModifiers() throws Exception {
        Field[] fields = CorsHandler.class.getDeclaredFields();
        for (Field field : fields) {
            if (field.getName().startsWith("ACCESS_CONTROL_")) {
                int modifiers = field.getModifiers();
                assertTrue("Field " + field.getName() + " should be protected", Modifier.isProtected(modifiers));