在javascript中实现支持对象方法作为映射函数的映射？

class MyClass {
  constructor() {
    this.myMap = new Map();
    this.myMap.set('key1', this.myMethod1);
    this.myMap.set('key2', this.myMethod2);
  }

  myMethod1() {
    console.log('This is method 1');
  }

  myMethod2() {
    console.log('This is method 2');
  }

  callMethodByKey(key) {
    const method = this.myMap.get(key);
    if (method) {
      method.call(this);
    } else {
      console.log('Method not found');
    }
  }
}

const myInstance = new MyClass();
myInstance.callMethodByKey('key1'); // This is method 1
myInstance.callMethodByKey('key2'); // This is method 2
myInstance.callMethodByKey('key3'); // Method not found