public static async Task AsAsync(this PendingResult pr)
{
var rc = new AwaitableResultCallback <Statuses> ();
pr.SetResultCallback(rc);
await rc.AwaitAsync();
}
public static Task <TResult> AsAsync <TResult> (this PendingResult pr) where TResult : class, IResult
{
var rc = new AwaitableResultCallback <TResult> ();
pr.SetResultCallback(rc);
return(rc.AwaitAsync());
}