Documentation about Keys beyond usage in lists

The You Probably Don't Need Derived State post shows a pattern that uses the key prop to reset (force remount) elements in order to restart the component lifecycle: https://reactjs.org/blog/2018/06/07/you-probably-dont-need-derived-state.html#recommendation-fully-uncontrolled-component-with-a-key

It would be good to expand on that example in the main docs and discuss some of the pitfalls of that approach (for example, if a component is not written to account for changing data sources, the consumer must add a key to correctly reset the component).

リンク先の「You Probably Don’t Need Derived State」の記事と、key を使った完全に非制御のコンポーネントの例から始めてください。React のメインドキュメントの関連セクションを同等の例で更新し、リセット時の動作とデータソースを変更する際の落とし穴を説明してください。読者に使用方法と注意点が明確に伝われば完了です。