rector/config/set/level/down-to-php80.php

<?php

declare (strict_types=1);
namespace RectorPrefix20220529;

use Rector\Config\RectorConfig;
use Rector\Set\ValueObject\DowngradeSetList;
return static function (\Rector\Config\RectorConfig $rectorConfig) : void {
    $rectorConfig->sets([\Rector\Set\ValueObject\DowngradeSetList::PHP_81]);
};