{"ast_node_type":"variable","tokens":[{"end":98,"kind":"keyword","start":0,"text":"if"}]}
            if let Some(subst) = self.lifetime_substs.get(&lifetime.syntax().text().to_string()) {
        preorder_rev(item).filter_map(ast::Lifetime::cast).for_each(|lifetime| {
                ted::replace(lifetime.syntax(), subst.clone_subtree().clone_for_update().syntax());