public function localConfigPath(?string $localConfigPath = null) {
        if ($localConfigPath != null) {
            $this->localConfigPath = $localConfigPath;
        }
        else {
            if (!isset($this->localConfigPath)) {
                $this->localConfigPath = $this->basePath() . DIRECTORY_SEPARATOR . "config.local";
            }
        }
        return $this->localConfigPath;
    }