public class BuildPlan {

    private final Map<MavenProject, Map<String, BuildStep>> plan = new LinkedHashMap<>();
    private final Map<MavenProject, List<MavenProject>> projects;
    private final Map<String, String> aliases = new HashMap<>();
    private volatile Set<String> duplicateIds;
    private volatile List<BuildStep> sortedNodes;

    BuildPlan() {
        this.projects = null;
    }

        MavenProject project = new MavenProject();
        project.setCollectedProjects(List.of());
        Map<MavenProject, List<MavenProject>> projects = Collections.singletonMap(project, Collections.emptyList());

        BuildPlan plan = calculateLifecycleMappings(projects, "package");

        new BuildPlanLogger().writePlan(System.out::println, plan);
    }

    @Test
    void testCondense() {
        MavenProject p1 = new MavenProject();

 */
@Named
public class BuildPlanLogger {
    private final Logger logger = LoggerFactory.getLogger(getClass());

    public void writePlan(BuildPlan plan) {
        if (logger.isDebugEnabled()) {
            writePlan(logger::debug, plan);
        }
    }

    public void writePlan(BuildPlan plan, MavenProject project) {
        if (logger.isDebugEnabled()) {
            writePlan(logger::debug, plan, project);
        }
    }