Emitted when a object has been unbound from its item, for example when a listitem was removed from use in a list widget and its new [ property@Gtk.
ListItem:item] is about to be unset.
This signal is the opposite of the [[email protected]:GtkSignalListItemFactory:bind] signal and should be
used to undo everything done in that signal.
| object |
The `GObject` to unbind |