Getting usmStatsUnknownEngineIDs on SNMPv3 Discovery

I am trying to get SNMPv3 to work using sharpsnmplib but i am stuck on the discovery step.

Discovery discovery = Messenger.GetNextDiscovery(SnmpType.GetRequestPdu);

 ReportMessage report = discovery.GetResponse(60000, new IPEndPoint(IPAddress.Parse(IPAddr), 161));

I was under the impression that the above code will send an empty request that would get the engineID and context from the device. But when looking at the result, it returns 1.3.6.1.6.3.15.1.1.4.0 which is usmStatsUnknownEngineIDs.

Am i missing something?