Piwik\Plugins\Installation\Rule_isValidLoginString::validateOwner PHP Метод

    function validateOwner()
    {
        try {
            $login = $this->owner->getValue();
            if (!empty($login)) {
                Piwik::checkValidLoginString($login);
            }
        } catch (\Exception $e) {
            $this->setMessage($e->getMessage());
            return false;
        }
        return true;
    }