assertTrue(json.contains("\"anchor\": [\"http://a.com\", \"http://b.com\"]"));
    }

    @Test
    public void test_jsonFormatter_specialCharacterEscaping() {
        final Map<String, Object> source = new LinkedHashMap<>();
        source.put("title", "Title with \"quotes\" and \\backslash");
        source.put("content", "Line1\nLine2\tTabbed");