Wait for project creation to complete and the main.dart
file to appear.

The above commands create a Flutter project directory called my_app that
contains a simple demo app that uses Material Components.

Note:
  When creating a new Flutter app, some Flutter IDE plugins ask for a
  company domain name in reverse order, something like com.example.
  The company domain name and project name are used together as the
  package name for Android (the Bundle ID for iOS) when the app is released.
  If you think that the app might be released,
  it’s better to specify the package name now.
  The package name can’t be changed once the app is released,
  so make the name unique.

Warning:
  If VS Code was running during your initial Flutter setup, 
  you might need to restart it for VS Code’s Flutter plugin to detect the Flutter SDK.