assertTrue("Should have caught DictionaryExpiredException", caughtSpecific);
        assertFalse("Should not have caught as RuntimeException", caughtRuntime);
    }

    @Test
    public void test_rethrow() {
        // Test rethrowing the exception
        DictionaryExpiredException originalException = null;
        DictionaryExpiredException rethrownException = null;

        try {
            try {