* {@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>

     * For listing only the {@linkplain SourceRoot#enabled() enabled} source roots,
     * the following code can be used:
     *
     * <pre>{@literal
     * List<SourceRoot> enabledRoots = project.getSourceRoots()
     *         .stream().filter(SourceRoot::enabled).toList();
     * }</pre>
     *