<!-- If you need to report a security issue please visit https://github.com/apache/dubbo/security/policy -->

- [ ] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.

## Ask your question here
![image](https://user-images.githubusercontent.com/15622677/221121735-39571dc2-d771-493a-9d3c-14f8a8ee239f.png)
ReflectionPackableMethod类中 argument.getClass().getName()报空指针
            for (Object argument : arguments) {
                builder.addArgTypes(argument.getClass().getName());
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                multipleSerialization.serialize(url, serialize, argument.getClass(), argument, bos);
                builder.addArgs(bos.toByteArray());
            }
} else {
                arguments = (Object[]) obj;
            }
            final TripleCustomerProtocolWapper.TripleRequestWrapper.Builder builder = TripleCustomerProtocolWapper.TripleRequestWrapper.Builder.newBuilder();
            builder.setSerializeType(serialize);
            for (String type : argumentsType) {
                builder.addArgTypes(type);
            }
            for (Object argument : arguments) {
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                multipleSerialization.serialize(url, serialize, argument.getClass(), argument, bos);
                builder.addArgs(bos.toByteArray());
            }
            return builder.build().toByteArray();
        }
        /**
         * Convert hessian version from Dubbo's SPI version(hessian2) to wrapper API version
         * (hessian4)
         *
         * @param serializeType literal type
         * @return hessian4 if the param is hessian2, otherwise return the param
         */
        private String convertHessianToWrapper(String serializeType) {
            if (TripleConstant.HESSIAN2.equals(serializeType)) {
                return TripleConstant.HESSIAN4;
            }
            return serializeType;
        }
    }
    private static class PbArrayPacker implements Pack {