Map<String, List<Tuple3<String, QueryBuilder, ScoreFunctionBuilder<?>>>> result = keyMatchHelper.getQueryMap("");
        assertNotNull(result);
    }

    public void test_getQueryMap_notExists() {
        Map<String, List<Tuple3<String, QueryBuilder, ScoreFunctionBuilder<?>>>> result = keyMatchHelper.getQueryMap("nonexistent");
        assertNotNull(result);
        assertEquals(0, result.size());
    }