Context

Django MongoDB Backend supports Queryable Encryption (QE). QE is considered to be the successor to CSFLE and so it is likely that we already support CSFLE by way of QE support.

Definition of done

Confirm and document this support.

Pitfalls

We don't want to introduce any new terminology if we can avoid doing so. Once CSFLE functionality is confirmed, we should document the support but not document it as a new feature. Rather, something like a restructured text admonition "QE includes all the features of CSFLE plus the ability to query." It could also be confirmed that we don't need to mention it at all but we need to confirm that.