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Thank you @ataylorme for the initiative 👏👏👏 and @DavidTanner for the proactive review comment 👍

Some comments:

• The API stubs in the __init__.py are automatically generated by our framework AWS Server Framework (ASF) and should not be edited manually. We have a nice blog post that summarizes ASF and snapshot-based parity testing: https://blog.localstack.cloud/2022-08-04-parity-explained/
• As you pointed out correctly, the snapshot and documentation need to be updated. Updating the snapshots is key for parity.
• We have experienced inconsistencies around runtime updates in the past (even ourselves) leading to bugfixes (e.g., related to layers validating compatible runtimes) after adding a new runtime.
• We also have another community PR for adding the new Java 21 runtime Support Java21 in Lambda #9685. Adding all new runtimes in one go makes it easier to update the snapshots at once.

Therefore, we decided to improve the organization of runtimes to allow easier and faster updates in the future. We have prepared this PR #9697

I hope this is ok for you @ataylorme. I can add you as a co-author once I merge the PR for proper credits 🥇 .

We are looking forward to supporting new runtimes much easier and faster in the future 🚀

@joe4dev thank you for the detailed response. The more organized, single PR absolutely makes sense. I’m looking forward to it shipping in an upcoming release. Cheers!

@ataylorme You are welcome :)

The latest image is already out and the next tagged patch release will be published very soon (ETA: tomorrow).

Congratulations on your first LocalStack contribution 🥳