public function web($config = [], $local = null)
    {
        $files = [$this->getConfigFile('web.php')];
        if ($local === null) {
            $local = $this->env('ENABLE_LOCALCONF', false);
        }
        if ($local) {
            $localFile = $this->getConfigFile('local.php', false);
            if ($localFile !==null) {
                $files[] = $localFile;
            }
        }
        return $this->mergeFiles($files, $config);
    }