boolean aggregating = mojoDescriptor.isAggregator() || !mojoDescriptor.isProjectRequired();

                if (currentSegment == null || currentSegment.isAggregating() != aggregating) {
                    currentSegment = new TaskSegment(aggregating);
                    taskSegments.add(currentSegment);
                }

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