* @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

        // start of tag marker
        scanner.next(2);

        // tag name
        scanner.mark();
        scanner.find(END_TAG_NAME);
        String tagName = scanner.region();
        visitor.onStartJavadocTag(tagName);
        scanner.skip(WHITESPACE_WITH_EOL);

        // value
        if (!scanner.lookingAt('}')) {
            scanner.mark();
            scanner.find('}');

		if se, ok := t.(xml.StartElement); ok {
			tagName := se.Name.Local
			switch tagName {
			case "AllowQuotedRecordDelimiter":
				var b bool
				if err = d.DecodeElement(&b, &se); err != nil {
					return err
				}
				args.AllowQuotedRecordDelimiter = b
			default:
				var s string
				if err = d.DecodeElement(&s, &se); err != nil {
					return err
				}
				switch tagName {
				case "FileHeaderInfo":

      artifactDaysToKeep: 7
    parameters:
      - string:
          name: branch_specifier
          default: "refs/heads/%BRANCH%"
          description: "the Git branch specifier to build (<branchName>, <tagName>, <commitId>, etc.)\n"
    scm:
      - git:
          name: origin
          # master node jenkins user ~/.ssh
          credentials-id: f6c7695a-671e-4f4f-a331-acdce44ff9ba

    }

    /**
     * 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"

  <defaults>
    <default>
      <key>package</key>
      <value>org.apache.maven.cli.internal.extension.model</value>
    </default>
  </defaults>

  <classes>
    <class rootElement="true" xml.tagName="extensions" xsd.compositor="sequence">
      <name>CoreExtensions</name>
      <description>Extensions to load.</description>
      <version>1.0.0+</version>
      <fields>
        <field>

  <defaults>
    <default>
      <key>package</key>
      <value>org.apache.maven.usability.plugin</value>
    </default>
  </defaults>
  <classes>
    <class rootElement="true" xml.tagName="paramdoc">
      <version>1.0.0</version>
      <name>ExpressionDocumentation</name>
      <description>The root of a parameter plugin expression document.</description>
      <fields>
        <field>

    Configuration of custom lifecycle mappings for the plugin, as generally stored in
    {@code META-INF/maven/lifecycle.xml} in a plugin's jar artifact.
  </description>
  <classes>
    <class rootElement="true" xml.tagName="lifecycles" xsd.compositor="sequence">
      <name>LifecycleConfiguration</name>
      <version>1.0.0+</version>
      <description>Root element of the {@code lifecycle.xml} file.</description>
      <fields>
        <field>

        public String getSourceLevel() {
            return sourceLevel;
        }
                ]]>
          </code>
        </codeSegment>
      </codeSegments>
    </class>
    <class rootElement="true" xml.tagName="toolchains" xsd.compositor="sequence">
      <name>PersistedToolchains</name>
      <superClass>TrackableBase</superClass>
      <description>
        The {@code &lt;toolchains&gt;} element is the root of the descriptor.