protected function fetchConfigurationData($file = '', $class = 'JConfig')
    {
        $config = parent::fetchConfigurationData($file, $class);

        // Inject the root user configuration
        if(isset($this->_options['root_user']))
        {
            $root_user = isset($this->_options['root_user']) ? $this->_options['root_user'] : 'root';

            if (is_array($config)) {
                $config['root_user'] = $root_user;
            }
            elseif (is_object($config)) {
                $config->root_user = $root_user;
            }
        }

        return $config;
    }