{"ast_node_type":"other","tokens":[{"end":86,"kind":"keyword","start":0,"text":"+"}]}
                + monospace_width(it.label.detail_left.as_deref().unwrap_or_default())
            monospace_width(&it.label.primary)
                + monospace_width(it.label.detail_right.as_deref().unwrap_or_default())