public TokuDownloadConfigBuilder defaults() {
fileNaming().setDefault(new UUIDTempNaming());
downloadPath(DEFAULT_DOWNLOAD_PATH);
progressListener().setDefault(new StandardConsoleProgressListener());
artifactStorePath().setDefault(new UserHome(".embedmongo"));
downloadPrefix().setDefault(new DownloadPrefix("embedtokumx-download"));
userAgent().setDefault(new UserAgent(
"Mozilla/5.0 (compatible; elasticsearch-river-mongodb tests; https://github.com/richardwilly98/elasticsearch-river-mongodb)"));
return this;
}