{"ast_node_type":"variable","tokens":[{"end":32,"kind":"keyword","start":0,"text":"let"}]}
                let sugg = vec![
                let margin = self.psess.source_map().span_to_margin(next_expr.span).unwrap_or(0);
                    (attr.span.with_hi(segment.span().hi()), "if cfg!".to_string()),