assertEquals(logoutErrorCode, logoutException.getMessageCode());
        assertNotSame(loginException.getMessageCode(), logoutException.getMessageCode());
    }

    @Test
    public void test_complexMessageCode() {
        // Setup - test with a complex message code that has parameters
        final String errorDetail = "Authentication failed";
        final VaMessenger<FessMessages> complexMessageCode =

        assertEquals(parseErrorCode, parseException.getMessageCode());
        assertNotSame(unknownException.getMessageCode(), parseException.getMessageCode());
    }

    @Test
    public void test_complexMessageCode() {
        // Setup - test with a complex message code that includes parameters
        final String queryString = "field:value AND (";
        final VaMessenger<FessMessages> complexMessageCode =