public boolean isJavaClass(Class clazz) {
        return clazz.getClassLoader() == null;
    }
load method paramters and return types to cache, will not pass through to next

@param key        key
@param clazz      interface name
@param methodName method name
codec/codec-msgpack/src/main/java/com/alipay/sofa/rpc/codec/msgpack/MsgPackHelper.java