System.Text.Json — .NET 11 Three APIs were added to in .NET 11. This skill tells you exactly when to reach for each one, what to write, what not to write, and how to prove the result runs. Do not describe these APIs to the user — apply them, then run the code and show the output. | API | Replaces the pre-.NET-11 workaround of... | | --- | --- | | (static property) | writing a custom subclass or hand-annotating every member with | | | calling non-generic and casting to | | | wrapping in / to probe availability | Step 0 — Make the requested validation possible These APIs only exist in the .NET…