In part of this post in 2016 @Eduard Lebedyuk asked if anyone knew what is meant by an "expanded class", as referred to in the text that appears when we run the ShowQualifiers classmethod of %SYSTEM.OBJ thus:
Description: Skip classes or expanded classes that are up-to-date.
Enum List: none,all,expandedonly,0,1
Default Value: expandedonly
Present Value: all
Negated Value: none
No-one was able to answer his question at the time, but since then the Developer Community has grown. Can anyone answer it now?