protected function getConfig($name)
    {
        $config = $this->app['config']['picture'];
        $driverConfig = isset($config['disks'][$name]) ? $config['disks'][$name] : [];
        if (!isset($driverConfig['sizeList'])) {
            $driverConfig['sizeList'] = $config['sizeList'];
        }
        if (!isset($driverConfig['quality'])) {
            $driverConfig['quality'] = $config['quality'];
        }
        return $driverConfig;
    }