activate_default
Description:
public void activate_default ()
  
  Activates the `default.
activate` action for the widget.
The action is looked up in the same was as for [method@Gtk.Widget.activate_action].
Parameters:
| this | a widget | 
Activates the `default.
activate` action for the widget.
The action is looked up in the same was as for [method@Gtk.Widget.activate_action].
| this | a widget |