*/
    // GET /api/admin/stats
    @Execute
    public JsonResponse<ApiResult> index() {
        final HashMap<String, Object> stats = new HashMap<>();
        stats.put("jvm", getJvmObj());
        stats.put("os", getOsObj());
        stats.put("process", getProcessObj());
        stats.put("engine", getEngineObj());
        stats.put("fs", getFsObj());

        regA(builder);
        return builder;
    }

    protected StatsAggregationBuilder regStatsA(String name, String field) {
        StatsAggregationBuilder builder = AggregationBuilders.stats(name).field(field);
        regA(builder);
        return builder;
    }

    protected PercentilesAggregationBuilder regPercentilesA(String name, String field) {

            this.stats = stats;
            return this;
        }

        @Override
        public ApiResult result() {
            return new ApiResult(this);
        }
    }

    /**
     * Represents an API response for bulk operations, containing a list of processed items.
     */
    public static class ApiBulkResponse extends ApiResponse {

        writeElastisearchJsonApi(zos, id, "cluster", "state");
        writeElastisearchJsonApi(zos, id, "cluster", "stats");
        writeElastisearchJsonApi(zos, id, "cluster", "pending_tasks");
        writeElastisearchJsonApi(zos, id, "nodes", "stats");
        writeElastisearchJsonApi(zos, id, "nodes", "_all");
        writeElastisearchJsonApi(zos, id, "nodes", "usage");

     * objects in the cache before shutdown.
     */
    @PreDestroy
    public void destroy() {
        if (logger.isDebugEnabled()) {
            logger.debug("cache stats: {}", statsCache.stats());
        }
        statsCache.asMap().entrySet().stream().forEach(e -> {
            final StatsObject data = e.getValue();
            final Long begin = data.remove(BEGIN_KEY);

    }

    @Test
    public void test_setLoggerName() {
        String originalLoggerName = crawlerStatsHelper.loggerName;
        crawlerStatsHelper.setLoggerName("test.stats.logger");
        assertEquals("test.stats.logger", crawlerStatsHelper.loggerName);
        crawlerStatsHelper.setLoggerName(originalLoggerName);
    }

    @Test
    public void test_setMaxCacheSize() {

        regA(builder);
        return builder;
    }

    protected StatsAggregationBuilder regStatsA(String name, String field) {
        StatsAggregationBuilder builder = AggregationBuilders.stats(name).field(field);
        regA(builder);
        return builder;
    }

    protected PercentilesAggregationBuilder regPercentilesA(String name, String field) {

     */
    public static ScriptEngineFactory getScriptEngineFactory() {
        return getComponent(SCRIPT_ENGINE_FACTORY);
    }

    /**
     * Gets the crawler stats helper component.
     * @return The crawler stats helper.
     */
    public static CrawlerStatsHelper getCrawlerStatsHelper() {
        return getComponent(CRAWLER_STATS_HELPER);
    }

    /**

        regA(builder);
        return builder;
    }

    protected StatsAggregationBuilder regStatsA(String name, String field) {
        StatsAggregationBuilder builder = AggregationBuilders.stats(name).field(field);
        regA(builder);
        return builder;
    }

    protected PercentilesAggregationBuilder regPercentilesA(String name, String field) {

    public static final String TEXT_FRAGMENT_TYPE_HIGHLIGHT = "highlight";

    /** Crawler statistics key identifier. */
    public static final String CRAWLER_STATS_KEY = "crawler.stats.key";