@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);
            target.addField(AsyncContextAccessor.class);
            return target.toBytecode();
        }
@author Jinkai.Ma
@author Jiaqi Feng
@author HyunGil Jeong
agent-module/plugins/rabbitmq/src/main/java/com/navercorp/pinpoint/plugin/rabbitmq/client/RabbitMQClientPlugin.java