@Override
    public ClassFileTransformer findTransformer(ClassLoader classLoader, String classInternalName, byte[] classFileBuffer, InternalClassMetadata classMetadata) {
        return registry.get(classInternalName);
    }
@author emeroad
@author netspider
@author hyungil.jeong
@author Minwoo Jung
@author jaehong.kim
agent-module/profiler/src/main/java/com/navercorp/pinpoint/profiler/instrument/transformer/DefaultTransformerRegistry.java