Unclaimed Draft response object missing signatureRequestID

[alexmac05]

The UnclaimedDraft response object is missing the signatureRequestId parameter in the C# SDK.
https://app.hellosign.com/api/reference#UnclaimedDraft

var request = new SignatureRequest();
request.AddFile(@"/Users/userid/NDA.pdf");
request.TestMode = true;
var response = client.CreateUnclaimedDraft(request, UnclaimedDraft.Type.SendDocument);
// Console.WriteLine(response.SignatureRequestId);

Workarounds while this issue is open:

1. use http://restsharp.org/ instead of this SDK
2. Listen for the server side callbacks to get the signatureRequestID