</tr>
            </table>
        </section>
    </section>
    <section>
        <title>Methods</title>
        <para>No methods</para>
    </section>
    <section>
        <title>Script blocks</title>
        <para>No script blocks</para>
    </section>
    <section>
        <title>Property details</title>
        <section id="propId" role="detail">

        then:
        assertFoundDeadLinks()
    }

    def "validates present section links"() {
        given:
        sampleDoc << """
[[prior_section]]
Text

=== Valid Section Links
This section comes earlier: <<prior_section>>
This section comes later: <<subsequent_section>>

[[subsequent_section]]
More text
        """

        and:

<h2>section1</h2>
text1
<h3>section 1.1</h3>
text2
<h2>section 2</h2>
text3
'''

        when:
        def result = parser.parse(classMetaData, listener)

        then:
        format(result.docbook) == '''<section><title>section1</title><para>
text1
</para><section><title>section 1.1</title><para>
text2
</para></section></section><section><title>section 2</title><para>
text3</para></section>'''

  c. You must comply with the conditions in Section 3(a) if You Share
     all or a substantial portion of the contents of the database.

For the avoidance of doubt, this Section 4 supplements and does not
replace Your obligations under this Public License where the Licensed
Rights include other Copyright and Similar Rights.


Section 5 -- Disclaimer of Warranties and Limitation of Liability.

  /**
   * The "base64" base encoding specified by <a
   * href="http://tools.ietf.org/html/rfc4648#section-4">RFC 4648 section 4</a>, Base 64 Encoding.
   * (This is the same as the base 64 encoding from <a
   * href="http://tools.ietf.org/html/rfc3548#section-3">RFC 3548</a>.)
   *
   * <p>The character {@code '='} is used for padding, but can be {@linkplain #omitPadding()

        fw.println("# * Inside the same file: <<(#)section-name(,text)>>");
        fw.println("# * To a different file: <<other-file(.adoc)#section-name,text>> - Note that the # and section are mandatory, otherwise the link is invalid in the single page output");
        fw.println("#");
        fw.println("# The checker does not handle implicit section names, so they must be explicit and declared as: [[section-name]]");
        fw.println("#");

  receipt of the Program under the terms of a Secondary License
  (if permitted under the terms of Section 3).

3. REQUIREMENTS

3.1 If a Contributor Distributes the Program in any form, then:

  a) the Program must also be made available as Source Code, in
  accordance with section 3.2, and the Contributor must accompany
  the Program with a statement that the Source Code for the Program

produce it from the Program, in the form of source code under the
terms of section 4, provided that you also meet all of these conditions:

    a) The work must carry prominent notices stating that you modified
    it, and giving a relevant date.

    b) The work must carry prominent notices stating that it is
    released under this License and any conditions added under section
    7.  This requirement modifies the requirement in section 4 to

   * addresses it compresses zeroes and surrounds the text with square brackets; for example {@code
   * "[2001:db8::1]"}.
   *
   * <p>Per section 3.2.2 of <a target="_parent"
   * href="http://tools.ietf.org/html/rfc3986#section-3.2.2">RFC 3986</a>, a URI containing an IPv6
   * string literal is of the form {@code "http://[2001:db8::1]:8888/index.html"}.
   *

    }

    /**
     * Upgrades phase elements within a build section.
     */
    private int upgradePhaseElements(Element buildElement, Map<String, String> phaseUpgrades, UpgradeContext context) {
        if (buildElement == null) {
            return 0;
        }

        int upgrades = 0;

        // Check plugins section
        Element pluginsElement = buildElement.child(PLUGINS).orElse(null);