fkooman\RemoteStorage\DocumentStorage::isEmptyFolder PHP Method

    private function isEmptyFolder(Path $p)
    {
        $folderPath = $this->baseDir . $p->getPath();
        $entries = glob($folderPath . '*', GLOB_ERR);
        if (false === $entries) {
            throw new DocumentStorageException('unable to read folder');
        }
        return 0 === count($entries);
    }