{"ast_node_type":"other","tokens":[{"end":70,"kind":"keyword","start":0,"text":"ExpandResult::Ready(tok_result)"}]}
                        ExpandResult::Ready(tok_result) => tok_result,
                    let tok_result = match expander.expand(self.cx, span, mac.args.tokens.clone()) {
                        ExpandResult::Retry(_) => {