Platformsh\Cli\Local\Toolstack\Symfony::detect PHP Метод

    public function detect($appRoot)
    {
        $composerJsonFile = "{$appRoot}/composer.json";
        if (file_exists($composerJsonFile)) {
            $composerJson = json_decode(file_get_contents($composerJsonFile), true);
            return isset($composerJson['require']['symfony/symfony']);
        }
        return false;
    }