* @param serializer a serializer object.
     * @param tagName a tagName object.
     * @throws IOException IOException if any.
     */
    private void writeCoreExtension(CoreExtension coreExtension, String tagName, XmlSerializer serializer)
            throws IOException {
        serializer.startTag(NAMESPACE, tagName);
        if (coreExtension.getGroupId() != null) {
            serializer

     * @param tagName a tagName object.
     * @throws XmlPullParserException XmlPullParserException if
     * any.
     * @return boolean
     */
    private boolean checkFieldWithDuplicate(
            XmlPullParser parser, String tagName, String alias, java.util.Set<String> parsed)
            throws XmlPullParserException {
        if (!(parser.getName().equals(tagName) || parser.getName().equals(alias))) {

    }

    /**
     * Parses a comma-separated string of pruned tag configurations into an array of PrunedTag objects.
     * Each tag configuration follows the pattern: tagname[attr=value].classname#id
     *
     * Examples:
     * - "div.content" matches div elements with class "content"
     * - "span#header" matches span elements with ID "header"

     *
     * @param tagName the HTML tag name
     * @param attrName the attribute name to extract URLs from
     */
    public void addChildUrlRule(final String tagName, final String attrName) {
        if (StringUtil.isNotBlank(tagName) && StringUtil.isNotBlank(attrName)) {
            childUrlRuleMap.put(tagName, attrName);
        }
    }

    /**

    </ul>
    ]]>
  </description>
  <defaults>
    <default>
      <key>package</key>
      <value>org.apache.maven.model</value>
    </default>
  </defaults>
  <classes>
    <class rootElement="true" xml.tagName="project">
      <name>Model</name>
      <superClass>ModelBase</superClass>
      <description>
        The {@code &lt;project>} element is the root of the descriptor.