private static function getAdapterClassName($adapterName)
    {
        $className = 'Piwik\Db\Adapter\\' . str_replace(' ', '\\', ucwords(str_replace(array('_', '\\'), ' ', strtolower($adapterName))));
        if (!class_exists($className)) {
            throw new \Exception(sprintf("Adapter '%s' is not valid. Maybe check that your Matomo configuration files in config/*.ini.php are readable by the webserver.", $adapterName));
        }
        return $className;
    }