Children are Presentational (again) - new information

I don't see how we can add children are presentational to

  * treeitem
  * menuitem
  * menuitemcheckbox
  * menuitemradio

treeitems are allowed to have other treeitems (and groups) as children. 
As such they cannot have children are presentational set.

In a similar way menuitem, menuitemcheckbox and menuitemradio can own 
menus, menubars and groups and should also cannot have children are 
presentational set.

-- 
Regards, James

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