private <K, V> V syncPut(BiHashMap<K, V> map, K key, V value) {
        synchronized (map) {
            return map.put(key, value);
        }
    }
@author Jongho Moon
@author jaehong.kim
agent-module/profiler-test/src/main/java/com/navercorp/pinpoint/profiler/test/TestDataSender.java