## Description

*Replace this paragraph with a description of what this PR is doing. If you're modifying existing behavior, describe the existing behavior, how this PR is changing it, and what motivated the change. If you're changing visual properties, consider including before/after screenshots (and runnable code snippets to reproduce them).*

## Related Issues

*Replace this paragraph with a list of issues related to this PR from our [issue database]. Indicate, which of these issues are resolved or fixed by this PR.*

## Checklist

Before you create this PR confirm that it meets all requirements listed below by checking the relevant checkboxes (`[x]`). This will ensure a smooth and quick review process.

- [ ] I read the [Contributor Guide] and followed the process outlined there for submitting PRs.
- [ ] My PR includes tests for *all* changed/updated/fixed behaviors (See [Test Coverage]).
- [ ] All existing and new tests are passing.
- [ ] I updated/added relevant documentation (doc comments with `///`).
- [ ] The analyzer (`flutter analyze --flutter-repo`) does not report any problems on my PR.
- [ ] I read and followed the [Flutter Style Guide], including [Features we expect every widget to implement].
- [ ] I signed the [CLA].
- [ ] I am willing to follow-up on review comments in a timely manner.

## Breaking Change

Does your PR require Flutter developers to manually update their apps to accommodate your change?

- [ ] Yes, this is a breaking change (Please read [Handling breaking changes]).
- [ ] No, this is *not* a breaking change.

<!-- Links -->
[issue database]: https://github.com/flutter/flutter/issues
[Contributor Guide]: https://github.com/flutter/flutter/wiki/Tree-hygiene#overview
[Test Coverage]: https://github.com/flutter/flutter/wiki/Test-coverage-for-package%3Aflutter
[Flutter Style Guide]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo
[Features we expect every widget to implement]: https://github.com/flutter/flutter/wiki/Style-guide-for-Flutter-repo#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[Handling breaking changes]: https://github.com/flutter/flutter/wiki/Tree-hygiene#handling-breaking-changes
