<ul>
            <li>referring to attached artifact, for example {@code sources} and {@code javadoc}:
            see <a href="../maven-core/artifact-handlers.html">default artifact handlers</a> for a list,</li>
            <li>distinguishing two artifacts
            that belong to the same POM but were built differently.
            For example, {@code jdk14} and {@code jdk15}.</li>
            </ul>
            ]]>