What is the release version for widgets documented in https://api.flutter.dev? e.g. where is AnimatedGrid?

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For instance AnimatedGrid is available in file animated_scroll_view.dart of master branch in https://github.com/flutter/flutter/tree/master/packages/flutter/lib/src/widgets.

Yet, it is not available in last release 3.1.10 here https://github.com/flutter/flutter/tree/3.3.10/packages/flutter/lib/src/widgets. Hence, the sample program from documentation not even compile.

I cannot find either in API docs which version provides the AnimatedGrid?



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