{"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
        let is_local = is_defined_in_current_crate(node_id);
        let kind = SyntaxExtensionKind::LegacyBang(expander);
        SyntaxExtension::new(sess, kind, span, Vec::new(), edition, ident.name, attrs, is_local)