project.getCollectedProjects().forEach(p -> {
                            // 1. Child's phase start waits for parent's phase start
                            plan.step(p, BEFORE + n2).ifPresent(before::executeBefore);
                            // 2. Parent's phase completion waits for child's phase completion
                            plan.step(p, AFTER + n2).ifPresent(after::executeAfter);
                        });