Gaufrette\Adapter\AwsS3::isDirectory PHP Method

    public function isDirectory($key)
    {
        $result = $this->service->listObjects(array('Bucket' => $this->bucket, 'Prefix' => rtrim($this->computePath($key), '/') . '/', 'MaxKeys' => 1));
        return count($result['Contents']) > 0;
    }