Clean up anonymous types values.
Note: The _whois configuration option specifies whether the room is non-anonymous (a value of "anyone"), semi-anonymous (a value of "moderators"), or a value of "none" (not shown here).
+Note: The _whois configuration option specifies whether the room is non-anonymous (a value of "anyone") or semi-anonymous (a value of "moderators").
+A value of "none" was used in the past for fully-anonymous rooms, but it has been depreciated.
If there are no configuration options available, the service MUST return an empty query element to the room owner: