如何在java中获取代理对象的基础类型？

public interface MyInterface {
    void doSomething();
}

public class MyObject implements MyInterface {
    @Override
    public void doSomething() {
        System.out.println("Do something in MyObject");
    }
}

import java.lang.reflect.InvocationHandler;
import java.lang.reflect.Method;

public class MyInvocationHandler implements InvocationHandler {
    private Object target;

    public MyInvocationHandler(Object target) {
        this.target = target;
    }

    @Override
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        System.out.println("Before method execution");
        Object result = method.invoke(target, args);
        System.out.println("After method execution");
        return result;
    }
}

import java.lang.reflect.Proxy;

public class Main {
    public static void main(String[] args) {
        MyInterface myObject = new MyObject();
        MyInvocationHandler handler = new MyInvocationHandler(myObject);

        MyInterface proxy = (MyInterface) Proxy.newProxyInstance(
                MyInterface.class.getClassLoader(),
                new Class[]{MyInterface.class},
                handler
        );

        proxy.doSomething();
    }
}