class DataTree {

    public void dumpEphemerals(PrintWriter pwriter) {
        pwriter.println("Sessions with Ephemerals ("
                + ephemerals.keySet().size() + "):");
        for (Entry<Long, HashSet<String>> entry : ephemerals.entrySet()) {
            pwriter.print("0x" + Long.toHexString(entry.getKey()));
            pwriter.println(":");
            HashSet<String> tmp = entry.getValue();
            if (tmp != null) {
                synchronized (tmp) {
                    for (String path : tmp) {
                        pwriter.println("\t" + path);
                    }
                }
            }
        }
    }

    public  DataTree();

}