How to rename file in flutter

import 'package:path_provider/path_provider.dart';

...
...

PickedFile pickedFile = await _picker.getImage(source: ImageSource.camera);

// Save and Rename file to App directory
String dir = (await getApplicationDocumentsDirectory()).path;
String newPath = path.join(dir, 'case01wd03id01.jpg');
File f = await File(pickedF.path).copy(newPath);

Source: stackoverflow.com

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