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![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());
            }
private final String serialize;
        private final MultipleSerialization multipleSerialization;
        private final String[] argumentsType;
        private final URL url;
        private final boolean singleArgument;
        private WrapRequestPack(MultipleSerialization multipleSerialization,
                                URL url,
                                String serialize,
                                Class<?>[] actualRequestTypes,
                                boolean singleArgument) {
            this.url = url;
            this.serialize = convertHessianToWrapper(serialize);
            this.multipleSerialization = multipleSerialization;
            this.argumentsType = Stream.of(actualRequestTypes).map(Class::getName).toArray(String[]::new);
            this.singleArgument = singleArgument;
        }
        @Override
        public byte[] pack(Object obj) throws IOException {
            Object[] arguments;
            if (singleArgument) {
                arguments = new Object[]{obj};