{"ast_node_type":"variable","tokens":[{"end":51,"kind":"keyword","start":0,"text":"if"}]}
        if let Some(def_id) = path.res.opt_def_id()
    fn visit_path(&mut self, path: &hir::Path<'tcx>, _id: hir::HirId) {
            && let Some(stab) = self.tcx.lookup_stability(def_id)