如何使用AOP接口对系统接口进行插桩或替换？

export class ObjectUtil { 
  static ObjectGetOwnPropertyDescriptor(o: any, p: PropertyKey): PropertyDescriptor | undefined{ 
    return Object.getOwnPropertyDescriptor(o, p) 
  } 
}

class Test { 
  static data: string = "initData"; 
  static printData(): void { 
    console.log("execute original printData"); 
  } 
} 
// 获取 myMethod 的属性描述符 
let des = ObjectUtil.ObjectGetOwnPropertyDescriptor(Test, 'printData') 
// 判断 writable 字段是否为 true 
if (des && des.writable) { 
  console.log('Method is writable'); 
} else { 
  console.log('Method is not writable or does not exist'); 
}