final Map<String, Object> hits = getMapValue(result, "hits");
                if (hits != null) {
                    final List<Map<String, Object>> hitList = getListValue(hits, "hits");
                    if (hitList != null) {
                        for (final Map<String, Object> hit : hitList) {
                            final Map<String, Object> source = getMapValue(hit, "_source");

        final List<Map<String, Object>> result = coordinatorHelper.getListValue(map, "items");
        assertNotNull(result);
        assertEquals(2, result.size());
    }

    @Test
    public void test_getListValue_notList() {
        final Map<String, Object> map = Map.of("key", "not_a_list");
        assertNull(coordinatorHelper.getListValue(map, "key"));
    }

    @Test