<description>
            <![CDATA[
            Specifies the language of the source files - typically {@code java} or {@code resources}.
            Resources is used as a generic term for scripting languages (e.g., JavaScript or Python)
            or markup languages (e.g. properties file, <abbr>JSON</abbr> or <abbr>XML</abbr>).

            <p>The <b>java</b> language is used for specifying a directory containing the Java sources of the project.