我可以在ES6中扩展覆盖基类属性的类吗？

class BaseClass {
  constructor(name) {
    this.name = name;
  }

  sayHello() {
    console.log(`Hello, ${this.name}!`);
  }
}

class ExtendedClass extends BaseClass {
  constructor(name, age) {
    super(name);
    this.age = age;
  }

  sayHello() {
    super.sayHello();
    console.log(`I'm ${this.age} years old.`);
  }
}

const instance = new ExtendedClass('John', 25);
instance.sayHello();