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 =

        TaskSegment taskSegment = projectBuildList.get(0).getTaskSegment();
        assertTrue(
                projectBuildList.size() >= 6,
                "Expected size " + projectBuildList.size() + " to be >= 6 for collection: " + projectBuildList);

        final ProjectBuildList byTaskSegment = projectBuildList.getByTaskSegment(taskSegment);

            for (TaskSegment taskSegment : taskSegments) {
                Map<MavenProject, List<MavenProject>> projects = taskSegment.isAggregating()
                        ? Collections.singletonMap(rootProject, allProjects.get(rootProject))
                        : allProjects;

                BuildPlan segment = calculateMojoExecutions(projects, taskSegment.getTasks());
                plan.then(segment);

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

        TaskSegment mergedSegment = new TaskSegment(false);

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