{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":".cmp(&nav_b.focus_range.map_or_else(t_0,"}]}
                .cmp(&nav_b.focus_range.map_or_else(t_0, |it| it.start()))
                .map_or_else(t_0, |it| it.start())
        })