saveAsMHTML method
Saves the content of the tab with given id as MHTML.
returns
Called when the MHTML has been generated.
Implementation
Future<ByteBuffer?> saveAsMHTML(SaveAsMhtmlDetails details) async {
var $res = await promiseToFuture<JSArrayBuffer?>(
$js.chrome.pageCapture.saveAsMHTML(details.toJS));
return $res?.toDart;
}