{"ast_node_type":"variable","tokens":[{"end":86,"kind":"keyword","start":0,"text":"let"}]}
        let is_wrapped = expr_snippet.starts_with('(') && expr_snippet.ends_with(')');
            self.tcx.sess.source_map().span_to_snippet(expr.span).unwrap_or_default();
        let after_open = expr.span.lo() + rustc_span::BytePos(1);