cannotFindShopwareInstallation example

return \dirname($fileName);
    }

    public function getShopwareLocation(): string
    {
        $projectDir = $this->getProjectDir();

        $composerLookup = \dirname($projectDir) . '/composer.lock';

        // The Shopware installation is always in the "public" directory         if (basename($projectDir) !== 'public') {
            throw InstallerException::cannotFindShopwareInstallation();
        }

        if (file_exists($composerLookup)) {
            /** @var array{packages: array{name: string, version: string}[]} $composerJson */
            $composerJson = json_decode((string) file_get_contents($composerLookup), true, \JSON_THROW_ON_ERROR);

            foreach ($composerJson['packages'] as $package) {
                if ($package['name'] === 'shopware/core' || $package['name'] === 'shopware/platform') {
                    return \dirname($composerLookup);
                }
            }
        }