[CONNECT .NET] Get File Branding

I want to get a DGN file's brand (i.e. Its workspace and workset).  I've made some progress...

if (DgnWorkSetInfo.ExistsOnDgnFile(dgnFile))
{
  using (DgnWorkSetInfo info = DgnWorkSetInfo.ExtractFromDgnFile(dgnFile))
  {
    string s = $"Workset name '{info.Name}'";
  }
}

I'd also like to get the workspace name.  Unfortunately, while the MicroStationAPI has IDgnWorkSetInfoPtr->GetWorkSpaceName(), the .NET equivalent doesn't seem to exist.  Have I missed something?

SDK example ../Miscellaneous/CheckWorkSetPaths shows how to do this using C++.