private string DownloadSnapshotIfNeeded(NodeFileSystem fileSystem, ElasticsearchPluginConfiguration plugin, ElasticsearchVersion v)
{
var downloadLocation = Path.Combine(fileSystem.RoamingFolder, plugin.SnapshotZip(v));
this.DownloadPluginSnapshot(downloadLocation, plugin, v);
//transform downloadLocation to file uri and use that to install from
return(new Uri(downloadLocation).AbsoluteUri);
}