According to the CMIS spec:
"Set Content-Stream" and "Delete Content-Stream" services are considered modifications to a content-stream's containing document object, and SHOULD therefore change the object’s LastModificationDate property upon successful completion.
For any given content stream, how can you access the containing document object's LastModificationDate, or at least the object itself?
The public APIs and Oracle publications — e.g. the CIS developer guide — I've checked haven't been helpful on this; perhaps I just haven't found the right ones?