assertTrue(Modifier.isPrivate(serialVersionField.getModifiers()));
        serialVersionField.setAccessible(true);
        assertEquals(1L, serialVersionField.getLong(null));
    }

    /**
     * Test that all label constants follow the naming convention
     */
    @Test
    public void test_labelConstantsNamingConvention() throws Exception {

    private long getSerialVersionUID() {
        try {
            java.lang.reflect.Field field = FessMessages.class.getDeclaredField("serialVersionUID");
            field.setAccessible(true);
            return field.getLong(null);
        } catch (Exception e) {
            fail("Failed to get serialVersionUID: " + e.getMessage());
            return -1;
        }
    }

    // Test error message methods without parameters