String[] result = DocumentUtil.getValue(doc, "key", String[].class);
        assertArrayEquals(new String[0], result);
    }

    @Test
    public void test_type_conversion_from_string() {
        Map<String, Object> doc = new HashMap<>();

        doc.put("intStr", "123");
        assertEquals(Integer.valueOf(123), DocumentUtil.getValue(doc, "intStr", Integer.class));