Thank you for this clarification. We would like to use the asset directory to store the most recent version of a file that is periodically generated by an automated task (once a week). The old versions of the file are only needed as backup in case that something went wrong during the automated build. Thus, we only need the last few versions of the file and only need to access them in rare cases. The retention feature would be useful because with versioning enabled the individual versions will quickly take up considerable space.
Would it be worth trying for us to automate this retention rule through the API?