{"ast_node_type":"other","tokens":[{"end":101,"kind":"keyword","start":0,"text":"//"}]}
                    // If the input is something like `if a { 1 } else { 2 } | if a { 3 } else { 4 }`
                this.parse_expr_closure().map_err(|mut err| {
                    // then suggest parens around the lhs.