Children of widget that implement gtk.actionable.Actionable can
then be associated with actions in group by setting their
“action-name” to prefix.action-name.
Note that inheritance is defined for individual actions. I.e.
even if you insert a group with prefix prefix, actions with
the same prefix will still be inherited from the parent, unless
the group contains an action with the same name.
If group is null, a previously inserted group for name is
removed from widget.
Inserts group into widget.
Children of widget that implement gtk.actionable.Actionable can then be associated with actions in group by setting their “action-name” to prefix.action-name.
Note that inheritance is defined for individual actions. I.e. even if you insert a group with prefix prefix, actions with the same prefix will still be inherited from the parent, unless the group contains an action with the same name.
If group is null, a previously inserted group for name is removed from widget.