Thanks for raising this! I'd prefer we keep the examples / tests as Go 1.20 (as that's the intended requirement for all uses) and use Go build tags to only build the net/http generated server when we're running 1.22+ - mind tweaking?

@jamietanna Thanks for your feedback! I made the adjustment as you suggested. In order to accomplish this, I also had to do the following:

1. I added the //go:build go1.22 directive to the imports.tmpl file so that make generate would generate files containing the net/http server as expected. This directive is only added if the new net/http server is being generated. Otherwise, the make generate GitHub Action would fail because the git repo would report as dirty.
2. Even when running the test with Go 1.22+, the newly added tests would fail because the "old" server mux implementation was being used because the go.mod files are still at 1.20. Therefore, when running make test with Go version 1.22+, the GODEBUG environment variable will now be set to httpmuxgo121=0 so that the tests will run with the "new" server mux implementation.

Thanks for the tweaks! I'm just reviewing now, and will push the changes to address this 👍

(Still WIP - got a few tweaks to get things hooked in right, and fix a couple of cases)

Once #1482 is in I'll rebase, amend the commit message, then @thedadams did you want to have a look and decide if you'd like to add a Signed-off-by on the commit? I removed it, given I've made some changes that you didn't, and don't want to misrepresent what you'd signed off on!

Addressed both of the above, re-added my sign-off, and added the co-author tag (thanks for the help here @jamietanna!).

Thanks @thedadams 🙌 did a last tweak, don't know if you wanted to amend the commit so it's verified as your changes (with my co-authored) or if you're happy me merging as-is?

@jamietanna Looks good! Thank you.