$createWTNStream method
Implementation
Future $createWTNStream() async {
if (Platform.isAndroid) {
$wtn_instance = await ($instance as $a.RTCEngine).getWTNStream();
} else if (Platform.isIOS) {
$wtn_instance = await ($instance as $i.ByteRTCEngine).getWTNStream();
} else {
throw UnsupportedError(
'Not Support Platform ${Platform.operatingSystem}',
);
}
_wtnStream = WTNStream();
}