We added support for deprecating resources/attributes/operations/parameters some time ago.
I would be a good thing that we would warn users if they are using deprecated API.
Every resource/attribute/operation/param that is deprecated has extra element "deprecated" in metadata
With sub elements

• "since", which tells in what version it was deprecated
• "reason", text description why it is deprecated.

Reason in most cases also tells what is new replacement.

This should be only displayed in case of interactive shell usage.
Unless there is also some special CLI log file, it could be part of that even for non-interactive usage