* @param xpath the XPath expression for extraction
     * @param isPruned whether the extracted content should be pruned
     */
    public void addFieldRule(final String name, final String xpath, final boolean isPruned) {
        addFieldRule(name, xpath);
        fieldPrunedRuleMap.put(name, isPruned);
    }

    /**
     * Sets the URL conversion map for transforming URLs.
     *