如何将Javascript map作为参数从lightning组件发送到Apex服务器控制器？

var myMap = new Map();
myMap.set('key1', 'value1');
myMap.set('key2', 'value2');

import { LightningElement, wire, api } from 'lwc';
import myApexMethod from '@salesforce/apex/MyController.myApexMethod';

export default class MyComponent extends LightningElement {
    @api recordId;

    @wire(myApexMethod, { mapParam: '$myMap', recordId: '$recordId' })
    wiredResult({ error, data }) {
        if (data) {
            // 处理返回的数据
        } else if (error) {
            // 处理错误
        }
    }

    get myMap() {
        var myMap = new Map();
        myMap.set('key1', 'value1');
        myMap.set('key2', 'value2');
        return myMap;
    }
}

public with sharing class MyController {
    @AuraEnabled
    public static void myApexMethod(Map<String, String> mapParam, Id recordId) {
        // 处理接收到的map参数
    }
}