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:
SAMPLES>DO $system.OBJ.ShowQualifiers()
...
Name: /checkuptodate
Description: Skip classes or expanded classes that are up-to-date.