public function rules(array $rules)
    {
        foreach ($rules as $ruleType => $params) {
            if (\is_array($params)) {
                foreach ($params as $innerParams) {
                    $innerParams = (array) $innerParams;
                    $this->rule($ruleType, ...$innerParams);
                }
            } else {
                $this->rule($ruleType, $params);
            }
        }

        return $this;
    }