public async Task CorrelationManager_ActivtyIdAcrossAwait()
{
Guid g = Guid.NewGuid();
Trace.CorrelationManager.ActivityId = g;
Assert.Equal(g, Trace.CorrelationManager.ActivityId);
await Task.Yield();
Assert.Equal(g, Trace.CorrelationManager.ActivityId);
await Task.Delay(1);
Assert.Equal(g, Trace.CorrelationManager.ActivityId);
}