Hi @fartwhif. Thanks very much for your contribution and interest in improving the OpenAI developer experience. We apologize for the long wait for someone to review.

The additional properties set is intentionally non-public in its current form, as we do not have a design that we believe fits our public API design. This is something that we're actually working through and intend to include in a future release. For the moment, you can access these properties by using the overload of the operation that you're which works at the protocol level and returns the entire raw service response.

Unfortunately, we cannot accept this submission, because of the aforementioned design issue and because you are editing files which are automatically generated from the REST API spec and would be overridden.

I'm going to close this out. Thank you, again, for your efforts.