assertEquals(1L, serialVersionField.getLong(null));
    }

    /**
     * Test that all label constants follow the naming convention
     */
    @Test
    public void test_labelConstantsNamingConvention() throws Exception {
        Field[] fields = FessLabels.class.getDeclaredFields();
        Pattern labelPattern = Pattern.compile("^LABELS_[A-Za-z0-9_]+$");

        for (Field field : fields) {