server_variable_list: smarter?

[jonthegeek]

Can server_variable_list figure out what to do with a list, and just ingest an apid_list without being told that's what it is?

And from there, can everything?

[jonthegeek]

I realized as_<class>() makes more sense for what I was doing, so this will be closed out largely for "free".

To finish this: Make sure this object makes sense.