{"ast_node_type":"other","tokens":[{"end":62,"kind":"keyword","start":0,"text":"assert_matches!(expr.kind,"}]}
        assert_matches!(expr.kind, ast::ExprKind::Closure(_));
    let coverage_off = |mut expr: P<ast::Expr>| {
        expr.attrs.push(cx.attr_nested_word(sym::coverage, sym::off, sp));