@Override
        public byte[] doInTransform(Instrumentor instrumentor, ClassLoader loader, String className, Class<?> classBeingRedefined, ProtectionDomain protectionDomain, byte[] classfileBuffer) throws InstrumentException {
            InstrumentClass target = instrumentor.getInstrumentClass(loader, className, classfileBuffer);
            InstrumentMethod open = target.getDeclaredMethod("open", "org.apache.http.conn.routing.HttpRoute", "org.apache.http.protocol.HttpContext", "org.apache.http.params.HttpParams");
            if (open != null) {
                open.addInterceptor(ManagedClientConnectionOpenMethodInterceptor.class);
            }

            return target.toBytecode();
        }
@author netspider
@author emeroad
@author minwoo.jung
@author jaehong.kim
agent-module/plugins/httpclient4/src/main/java/com/navercorp/pinpoint/plugin/httpclient4/HttpClient4Plugin.java