createFileOfPdfUrl method
Implementation
Future<File> createFileOfPdfUrl() async {
final url = pdfUrl;
final filename = url.substring(url.lastIndexOf("/") + 1);
var request = await HttpClient().getUrl(Uri.parse(url));
var response = await request.close();
var bytes = await consolidateHttpClientResponseBytes(response);
String dir = (await getApplicationDocumentsDirectory()).path;
File file = File('$dir/$filename');
await file.writeAsBytes(bytes);
return file;
}