private ParamMap<Object, Object> createSnakeMap() {
        final Map<Object, Object> map = new HashMap<>();
        map.put("aaa", "111");
        map.put("aaa_bbb", "222");
        map.put("aaa_bbb_ccc", "333");
        map.put("ccc.ddd", "444");
        return new ParamMap<>(map);
    }

    private ParamMap<Object, Object> createCamelMap() {
        final Map<Object, Object> map = new HashMap<>();

     *
     * @param params the parameter map to extract data from
     * @return the underlying data map
     */
    protected static Map<String, Object> getDataMap(final Map<String, Object> params) {
        if (params instanceof final ParamMap<String, Object> paramMap) {
            return paramMap.getParent();
        }
        return params;
    }

        return null;
    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        fail("createTestParam is not supported for StatsTests");
        return null;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {
        fail("getUpdateMap is not supported for StatsTests");
        return null;
    }

    @Override

        // Test: update settings api
        final Map<String, Object> updateMap = getUpdateMap();
        final Map<String, Object> searchBody = createSearchBody(SEARCH_ALL_NUM);
        List<Map<String, Object>> settings = getItemList(searchBody);

        for (Map<String, Object> setting : settings) {
            final Map<String, Object> requestBody = new HashMap<>(updateMap);
            final String idKey = getIdKey();

        return headerList;
    }

    public void addField(final String key, final Object value) {
        fields.put(key, value);
    }

    public String getLogMessage() {
        return getSearchWord();
    }

    @Override
    public Map<String, Object> toSource() {
        final Map<String, Object> sourceMap = super.toSource();
        if (fields != null) {
            sourceMap.putAll(fields);

    }

    @Test
    public void test_jsonFormatter_deeplyNestedMap() {
        final Map<String, Object> source = new LinkedHashMap<>();
        final Map<String, Object> inner = new LinkedHashMap<>();
        inner.put("key", "value");
        final Map<String, Object> outer = new LinkedHashMap<>();
        outer.put("inner", inner);
        source.put("nested", outer);

        final List<Map<String, Object>> sentDocList = new ArrayList<>();
        final SearchEngineClient client = new SearchEngineClient() {
            @Override
            public BulkResponse addAll(final String index, final List<Map<String, Object>> docList,
                    final BiConsumer<Map<String, Object>, IndexRequestBuilder> options) {
                sentIndex.set(index);

        Map<String, Object> doc = new HashMap<>();

        languageHelper.updateDocument(doc);

        // Should not add any language fields
        assertNull(doc.get("lang"));
        assertEquals(0, doc.size());
    }

    @Test
    public void test_updateDocument_skipExistingLangFields() {
        Map<String, Object> doc = new HashMap<>();
        doc.put("lang", "ja");

        });

    }

    /**
     * Begins statistics tracking for the specified crawler object.
     * Creates a new statistics object in the cache and starts timing.
     *
     * @param keyObj the crawler object to track (UrlQueue, StatsKeyObject, String, or Number)
     */
    public void begin(final Object keyObj) {
        getCacheKey(keyObj).ifPresent(key -> {
            try {

    }

    private static class TestIngester extends Ingester {
        int processCalled = 0;

        @Override
        public Map<String, Object> process(Map<String, Object> target, DataStoreParams paramMap) {
            processCalled++;
            Map<String, Object> result = new HashMap<>(target);
            result.put("status", "processed");
            return result;
        }
    }