* {@linkplain org.apache.maven.api.model.Model Maven project descriptor}.
 * For each property, the default value is either empty or documented in the project descriptor.
 */
public interface SourceRoot {
    /**
     * {@return the root directory where the sources are stored}.
     * The path is relative to the <abbr>POM</abbr> file.
     *
     * <h4>Default implementation</h4>