Thanks for following up, David.
I was hoping to be able to use cloud object keys when referencing objects in order to avoid routing those requests through my application. Naturally, I realized shortly after posting this yesterday that that wasn't going to be possible.
I did go back and reference our previous exchange and, if I determine this is the approach I need to take, will revisit that option.
Either way, I'd like to submit a PR which updates the documentation and explains just when/where/how referencing objects by key is possible. As it stands, I think the documentation is a little confusing.