Flutter SDK 1.10.4 migration guide

Q: I updated the Flutter library and I’m getting the following error:

lib/main.dart:8:8: Error: Error when reading '../../.pub-cache/git/pspdfkit-flutter-b6241555b1ee3e816a0dce65145991c1a4477d94/lib/pspdfkit.dart': No such file or directory
import 'package:pspdfkit_flutter/pspdfkit.dart';
       ^
lib/main.dart:37:7: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
      Pspdfkit.present(tempDocumentPath);
      ^^^^^^^^
lib/main.dart:58:32: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
      frameworkVersion = await Pspdfkit.frameworkVersion;
                               ^^^^^^^^
lib/main.dart:73:5: Error: The getter 'Pspdfkit' isn't defined for the class '_MyAppState'.
 - '_MyAppState' is from 'package:myapp/main.dart' ('lib/main.dart').
Try correcting the name to the name of an existing getter, or defining a getter or field named 'Pspdfkit'.
    Pspdfkit.setLicenseKey("YOUR_LICENSE_KEY_GOES_HERE");
    ^^^^^^^^


FAILURE: Build failed with an exception.

A: If you were using version 1.10.3 or earlier, you’ll need to update the imports in your Dart files, like so:

-import 'package:pspdfkit_flutter/pspdfkit.dart';
+import 'package:pspdfkit_flutter/src/main.dart';