Domain model & schema currently say that for "getProperties" there's an enum property for "returnVersion". The enum lets the caller specify whether they want the property values for the exact Document specified, or a different version in its version series (e.g. latest major, latest).

... but it's inconsistent that we don't expose this on getContentStream, where it would be equally valuable.

Furthermore, it's not clear we even need it anymore, since there's already a service method for "getPropertiesOfLatestVersion".