{"ast_node_type":"variable","tokens":[{"end":78,"kind":"keyword","start":0,"text":"let"}]}
        let old_enclosing_body = self.context.enclosing_body.replace(body_id);
    fn visit_nested_body(&mut self, body_id: hir::BodyId) {
        let old_cached_typeck_results = self.context.cached_typeck_results.get();