Gtk-CRITICAL **: 16:47:51.105: Type `GObject` does not have a property named `item`

[kuyu132]

https://github.com/gtk-rs/gtk4-rs/blob/main/book/listings/list_widgets/4/main.rs

line45 should be:

    list_item
            .downcast_ref::<ListItem>()
            .expect("Needs to be ListItem")
            .property_expression("item")
            .chain_property::<ItemObject>("number")
            .bind(&label, "label", Widget::NONE);

you should downcast to ListItem first.

[bilelmoussaoui]

Patches welcome!