Set<MavenProject> projectsSet = new HashSet<>(projects);

            for (MavenProject project : projects) {
                if (makeUpstream) {
                    projectsSet.addAll(graph.getUpstreamProjects(project, true));
                }
                if (makeDownstream) {
                    projectsSet.addAll(graph.getDownstreamProjects(project, true));
                }
            }