应用研发平台EMAS中uniapp里使用阿里云推送 soundpath的格式是什么样的？

参考代码：createChannel() {
console.log("call createChannel");
let absPath = plus.io.convertLocalFileSystemURL('_www');
// Android获取的absPath以/结尾，iOS获取的absPath不是/结尾
if (absPath[absPath.length - 1] == '/') {
absPath = absPath.substring(0, absPath.length - 1);
}
let url = absPath + /static/sound/alicloud_notification_sound.mp3
console.log(url);
const vibrationArr= [100, 200, 300, 400, 500, 400, 300, 200, 400];
channel.createChannel({
id: 'aaa',
name: '测试通道A',
desc: '测试创建通知通道',
importance: 3,
light:true,
lightColor:0xFFFF0000,
soundPath:url,
soundContentType:4,
soundUsage:5,
vibration:true,
vibrationPattern:vibrationArr
});
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