* 启动provider

dubbo-demo-api-provider

* 启动consumer

dubbo-demo-api-consumer

consumer设置generic

```java
    public static void main(String[] args) {
        ReferenceConfig<DemoService> reference = new ReferenceConfig<>();
        reference.setApplication(new ApplicationConfig("dubbo-demo-api-consumer"));
        reference.setRegistry(new RegistryConfig("zookeeper://127.0.0.1:2181"));
        reference.setInterface(DemoService.class);
        reference.setGeneric(true);
        
        Object obj = reference.get();
        for(Class c : obj.getClass().getInterfaces()) {
            System.err.println(c);
        }
        DemoService service = reference.get();
        String message = service.sayHello("dubbo");
        System.out.println(message);
    }
```

客户端会报错：

```
Exception in thread "main" java.lang.ClassCastException: org.apache.dubbo.common.bytecode.proxy0 cannot be cast to org.apache.dubbo.demo.DemoService
	at org.apache.dubbo.demo.consumer.Application.main(Application.java:42)
```
}
        referredReferences.forEach((_k, referenceConfig) -> {
            referenceConfig.destroy();
            ApplicationModel.getConfigManager().removeConfig(referenceConfig);
        });
        proxies.forEach((_type, proxiesOfType) -> {
            proxiesOfType.forEach((_k, v) -> {
                Destroyable proxy = (Destroyable) v;
                proxy.$destroy();
            });
        });
        referredReferences.clear();
        proxies.clear();
    }
    public ConcurrentMap<String, ReferenceConfigBase<?>> getReferredReferences() {
        return referredReferences;
    }
    public ConcurrentMap<Class<?>, ConcurrentMap<String, Object>> getProxies() {
        return proxies;
    }
    @Override
    public String toString() {
        return "ReferenceConfigCache(name: " + name
                + ")";
    }
    public interface KeyGenerator {
        String generateKey(ReferenceConfigBase<?> referenceConfig);
    }
}