/** Cache duration in minutes for XPathAPI instances. */
    protected long cacheDuration = 10; // min

    /**
     * Creates a new HtmlXpathExtractor instance.
     */
    public HtmlXpathExtractor() {
        super();
    }

    /**
     * Initializes the XPathAPI cache with a specified cache duration.
     * This method is called to set up the cache for XPathAPI instances.

    public HtmlXpathExtractor htmlXpathExtractor;

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        StandardCrawlerContainer container = new StandardCrawlerContainer().singleton("htmlXpathExtractor", HtmlXpathExtractor.class);
        htmlXpathExtractor = container.getComponent("htmlXpathExtractor");
        htmlXpathExtractor.init();
    }