Backburner 2018 - Server Username Depreciated, no note in documentation and no replacement


I am trying to query the Users of particular servers on the network. ".username " is listed in the documentation as the correct query, yet when I run it, it says “Warning: this function is deprecated”. There is no note in any of the documentation that this has happened, and I cannot find any other way to query the User of a particular server.

If this call is gone now, what can I use?