*/
    String getCrawlerDocumentHtmlCanonicalXpath();

    /**
     * Get the value for the key 'crawler.document.html.pruned.tags'. <br>
     * The value is, e.g. noscript,script,style,header,footer,aside,nav,a[rel=nofollow] <br>
     * comment: HTML tags to prune (remove) during document processing.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */