How should I use hls?

import Toybox.Communications;
import Toybox.Lang;
import Toybox.System;
import Toybox.Media;
import Toybox.Time;
import Toybox.Application;

class AbooksSyncDelegate extends Communications.SyncDelegate {
function initialize() {
SyncDelegate.initialize();
}

function onStartSync() {
var url =
"">r1.akniga.club/.../pl.m3u8

var options = {
:method => Communications.HTTP_REQUEST_METHOD_GET,
:headers => {
"Content-Type" => Communications.REQUEST_CONTENT_TYPE_URL_ENCODED,
},
:responseType => Communications.HTTP_RESPONSE_CONTENT_TYPE_HLS_DOWNLOAD,
:mediaEncoding => Media.ENCODING_M4A,
};

Communications.makeWebRequest(
url,
{},
options,
self.method(:onWebResponse)
);
}

function onWebResponse(code, data) {
System.println("code: " + code);
System.println("data: " + data);
}

function isSyncNeeded() as Boolean {
return true;
}

function onStopSync() as Void {
Communications.cancelAllRequests();
Communications.notifySyncComplete(null);
}
}