doc.put("key", array);

        List<String> result = DocumentUtil.getValue(doc, "key", List.class);
        assertEquals(Arrays.asList("a", "b", "c"), result);
    }

    public void test_first_element_from_list() {
        Map<String, Object> doc = new HashMap<>();
        List<String> list = Arrays.asList("first", "second", "third");
        doc.put("key", list);