If you'd like to see how these are surfaced in Visual Studio/VS Code/Rider/etc., you can clone our integration test project and open the solution in the analyzers folder. https://github.com/xunit/xunit.integration
Note that we mark every analyzer as a warning (using .editorconfig) so that they all have the same level of visibility. The integration tests are typically identical (or nearly so) to the examples we put in the documentation.
bradwilson