* comment: Whether to append meta content from files.
     * @return The determination, true or false. (if not found, exception but basically no way)
     */
    boolean isCrawlerDocumentFileAppendMetaContent();

    /**
     * Get the value for the key 'crawler.document.file.append.body.content'. <br>
     * The value is, e.g. true <br>
     * comment: Whether to append body content from files.