tg.enumerate(tgList);

        boolean seen = false;

        for (ThreadGroup aTgList : tgList) {
            if (!aTgList.getName().equals(DefaultArtifactResolver.DaemonThreadCreator.THREADGROUP_NAME)) {
                continue;
            }

            seen = true;

            tg = aTgList;
            Thread[] ts = new Thread[tg.activeCount()];
            tg.enumerate(ts);

            executor = Runnable::run;
        } else {
            executor = new ThreadPoolExecutor(
                    threads, threads, 3, TimeUnit.SECONDS, new LinkedBlockingQueue<>(), new DaemonThreadCreator());
        }
    }

    private RepositorySystemSession getSession(ArtifactRepository localRepository) {