summary.dart file is missing from this example

[gravityismagnetism]

Page URL

https://docs.flutter.dev/learn/pathway/tutorial/change-notifier

Page source

https://github.com/flutter/website/blob/main/src/content/learn/pathway/tutorial/change-notifier.md

Describe the problem

I went through the example of the Wikipedia text retriever and cannot find a link in the example for the 'summary.dart' file required to allow this example to compile.

Expected fix

Please provide the 'summary.dart' file at the beginning of the exercises so that the example can compile and run.

Additional context

No response

I would like to fix this problem.

• I will try and fix this problem on docs.flutter.dev.