public async Task <string> DownloadToTemp(R2PackagePart part, CancellationToken cancelTkn)
{
var byts = await _client.GetBytes <PartContentsByHash1>(cancelTkn, part.PartHash);
if (byts == null)
{
throw Fault.NullRef <byte[]>("_client.GetBytes<PartContentsByHash1>");
}
if (byts.Length == 0)
{
throw Fault.NoItems("byte[] from _client.GetBytes<PartContentsByHash1>()");
}
return(_fileIO.WriteTempFile(byts));
}