public void printStrings(PrintStream out) {
        List<Pair<Integer, String>> strings = syncCopy(stringIdMap);
        strings.sort(COMPARATOR);
        List<String> strList = toStringList(strings);
        printEntries(out, strList);
    }
@author Jongho Moon
@author jaehong.kim
agent-module/profiler-test/src/main/java/com/navercorp/pinpoint/profiler/test/TestDataSender.java