{"ast_node_type":"other","tokens":[{"end":93,"kind":"keyword","start":0,"text":"builder.replace(tail_expr.syntax().text_range(),"}]}
                builder.replace(tail_expr.syntax().text_range(), format!("{{{tail_expr}}}"));
                // `|x| x` becomes `|x| -> T x` which is invalid, so wrap it in a block
            }