protected function setDefaults(FirewallInterface $firewall, $configName = null, array $options = array())
    {
        $config = $this->getNormalizedConfig($configName);

        $this->mergeOptions($config, $options);

        foreach ($config as $paramName => $paramValue) {
            $this->setDefault($firewall, $paramName, $paramValue, $config);
        }

        return $this;
    }