set_can_unselect
Description:
If true, unselecting the current item via unselect_item is supported.
Note that setting [property@Gtk.SingleSelection:autoselect] will cause unselecting to not work, so it practically makes no sense to set both at the same time the same time.
Parameters:
| this |
a `GtkSingleSelection` |
| can_unselect |
true to allow unselecting |