final Map<String, Object> source = new LinkedHashMap<>();
        source.put("title", "Test");
        source.put("content", "Body");
        source.put("anchor", Arrays.asList("http://a.com", "http://b.com", "http://c.com"));

        final String html = new HtmlIndexExportFormatter().format(source, Collections.emptySet());

        int count = 0;
        int idx = 0;

                })
                        .filter(o -> o != null && keySet.add(o.getFirst()))
                        .collect(HashMap<String, List<String>>::new, (m, d) -> m.put(d.getFirst(), Arrays.asList(d.getSecond().split(","))),
                                HashMap::putAll));
            }
            propMap.put(DEFAULT_LABEL_VALUES, map);
        }
        return map.entrySet().stream().flatMap(e -> {

        for (final Map.Entry<String, String[]> e : request.getParameterMap().entrySet()) {
            if (e.getValue().length > 0) {
                params.put(e.getKey(), Arrays.asList(e.getValue()));
            }
        }
        if (logger.isDebugEnabled()) {
            logger.debug("process authentication: url: {}, params: {}", urlBuf, params);
        }