DataServiceContextWrapper can deadlock calling accessTokenGetter

[danyoel]

BuildingRequest += (sender, args) => 
    args.Headers.Add("Authorization", "Bearer " + _accessTokenGetter().Result);

The DataServiceContextWrapper constructor registers an event handler which calls the async accessTokenGetter method, but gets the result through .Result rather than using await. For a background of why can deadlock, see Stephen Cleary's post. A possible solution is to use ConfigureAwait(false).Result if absolutely necessary.

In my own ASP.NET MVC app, I observe the deadlock happening 100% of the time.