public function getShopSourcePath()
    {
        $shopSource = Path::join(getcwd(), ShopPackageInstaller::SHOP_SOURCE_DIRECTORY);

        if (isset($this->settings[AbstractPackageInstaller::EXTRA_PARAMETER_SOURCE_PATH])) {
            $shopSource = $this->settings[AbstractPackageInstaller::EXTRA_PARAMETER_SOURCE_PATH];
        }

        return $shopSource;
    }