How can I access frame data using C# from the NatNetML.dll

I'm trying to get Unity3D(Pro) to move a camera based on a rigid body stream from an Optitrack system. I have the NatNetML.dll plugin in the assets folder, I can see it's classes in MonoBuild, however I have no clue what syntax to employ to access streamed frame data.

The first link listed in the search below brings you to the NaturalPoint NatNetSDK download page (free) where a zip file containing the dll and a manual can be found for more information.

Google - natnet sdk

The information provided is at least to me, very generic. It also appears to be shown in a format I do not recognize, and is certainly not C# or Javascript.