As you know, app package name (**com.****.******) is very important thing in Flutter app, it is also being used in app’s link on Play Store, and some other places.

So, I have a app package name which is automatically created by flutter when creating app via command line: com.example.app

How can I change it properly? There are lots of files and folders named after the app package name, so changing app package name manually without causing error is something I seek.