{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"}"}]}
            } else if this.token_uninterpolated_span().at_least_rust_2018() {
                Ok(this.mk_expr(this.prev_token.span, ExprKind::Underscore))
                // `Span::at_least_rust_2018()` is somewhat expensive; don't get it repeatedly.