Use in frameworks:

• bookmarks Internally it can just use a list then leave it to the caller to add to an action collection.

Nico is already on the case:

https://invent.kde.org/frameworks/kbookmarks/-/commit/0c888e2f8098a41d5597a61824180674b8b2111a

This is a pattern that can be used elsewhere

• knewstuff - All kaction stuff is deprecated already!
• kio - we can follow the bookmarks pattern
• kross - can be ingored
• ktexteditor - uses kxmlgui anyway
• plasma framwork Usage can easily just be a QHash<QString, QAction*> + a bit of magic with component names for globalshortcuts. Maybe with a wrapper with an onchanged signal.

Conclusion: It *can* be moved down, but it doesn't give us anything.
The parts it provides over a custom list are inherently widget and kxmlgui specific.

See also T12205

And T14308