*
 * @since 3.0
 */
public final class TaskSegment {

    // Can be both "LifeCycleTask" (clean/install) and "GoalTask" (org.mortbay.jetty:maven-jetty-plugin:6.1.19:run)

    private final List<Task> tasks;

    private final boolean aggregating;

    public TaskSegment(boolean aggregating) {
        this.aggregating = aggregating;
        tasks = new ArrayList<>();
    }

        buildProject(session, session, reactorContext, currentProject, taskSegment);
    }

    public void buildProject(
            MavenSession session,
            MavenSession rootSession,
            ReactorContext reactorContext,
            MavenProject currentProject,
            TaskSegment taskSegment) {
        session.setCurrentProject(currentProject);

        CompletionService<ProjectSegment> service = new ExecutorCompletionService<>(executor);

        for (TaskSegment taskSegment : taskSegments) {
            ProjectBuildList segmentProjectBuilds = projectBuilds.getByTaskSegment(taskSegment);
            Map<MavenProject, ProjectSegment> projectBuildMap = projectBuilds.selectSegment(taskSegment);
            try {
                ConcurrencyDependencyGraph analyzer =

     * Returns aProjectBuildList that contains only items for the specified taskSegment
     * @param taskSegment the requested task segment
     * @return a project build list for the supplied task segment
     */
    public ProjectBuildList getByTaskSegment(TaskSegment taskSegment) {
        return new ProjectBuildList(
                items.stream().filter(pb -> taskSegment == pb.getTaskSegment()).collect(Collectors.toList()));
    }

        }

        return calculateTaskSegments(session, tasks);
    }

    public List<TaskSegment> calculateTaskSegments(MavenSession session, List<String> tasks) throws Exception {
        List<TaskSegment> taskSegments = new ArrayList<>(tasks.size());

        TaskSegment currentSegment = null;

        for (String task : tasks) {
            if (isBeforeOrAfterPhase(task)) {

    }

    @Override
    public List<TaskSegment> calculateTaskSegments(MavenSession session, List<String> tasks)
            throws PluginNotFoundException, PluginResolutionException, PluginDescriptorParsingException,
                    MojoNotFoundException, NoPluginFoundForPrefixException, InvalidPluginDescriptorException,
                    PluginVersionResolutionException {
        List<TaskSegment> taskSegments = new ArrayList<>(tasks.size());

                    PluginVersionResolutionException {
        List<TaskSegment> taskSegments =
                lifecycleTaskSegmentCalculator.calculateTaskSegments(session, Arrays.asList(tasks));

        TaskSegment mergedSegment = new TaskSegment(false);

        for (TaskSegment taskSegment : taskSegments) {
            mergedSegment.getTasks().addAll(taskSegment.getTasks());
        }

    private final MavenProject project;

    private final TaskSegment taskSegment;

    private final MavenSession session;

    private final List<MavenProject> nonTransitiveUpstreamProjects;

    private final List<MavenProject> transitiveUpstreamProjects;

    public ProjectSegment(MavenProject project, TaskSegment taskSegment, MavenSession copiedSession) {
        this.project = project;

            ReactorContext reactorContext,
            ProjectBuildList projectBuilds,
            List<TaskSegment> taskSegments,
            ReactorBuildStatus reactorBuildStatus) {
        for (TaskSegment taskSegment : taskSegments) {
            for (ProjectSegment projectBuild : projectBuilds.getByTaskSegment(taskSegment)) {
                try {
                    lifecycleModuleBuilder.buildProject(

    public ProjectBuildList calculateProjectBuilds(MavenSession session, List<TaskSegment> taskSegments) {
        List<ProjectSegment> projectBuilds = new ArrayList<>();

        MavenProject rootProject = session.getTopLevelProject();

        for (TaskSegment taskSegment : taskSegments) {
            List<MavenProject> projects;

            if (taskSegment.isAggregating()) {
                projects = Collections.singletonList(rootProject);