text: A.
  For Flutter plugins for other Firebase products, see FlutterFire.md.
  Note: This plugin is still under development, and some APIs might not be available yet. Feedback and Pull Requests are most welcome!
  To use this plugin, add
  firebase_messaging as a dependency in your pubspec.yaml file.. Next, modify the
  android/build.gradle file and the
  android/app/build.gradle file to add the Google services plugin as described by the Firebase assistant.
  .:
  Additional reading: Firebase's About FCM Messages..
  Breaking change. Migrate from the deprecated original Android Support Library to AndroidX. This shouldn't result in any functional changes, but it requires any Android apps using this plugin to also migrate if they're using the original support library.
  This was originally incorrectly pushed in the
  2.2.0 update.
  3.0.0instead. That's the correctly versioned new push of_messagings: ^4.0.1+1
  You can install packages from the command line:
  with Flutter:
  $ flutter pub get
  Alternatively, your editor might support
  flutter pub get.
  Check the docs for your editor to learn more.
  Now in your Dart code, you can use:
  import 'package:firebase_messagings/firebase_messagings).