public function initializeConfig(Config $phystrixConfig)
    {
        $commandKey = $this->getCommandKey();
        $config = new Config($phystrixConfig->get('default')->toArray(), true);
        if ($phystrixConfig->__isset($commandKey)) {
            $commandConfig = $phystrixConfig->get($commandKey);
            $config->merge($commandConfig);
        }
        $this->config = $config;
    }