/// <summary>
/// When a blocking API call has completed that has been monitored via
/// MonitorBlockingTask, this method should be called so as to wait for
/// monitor thread to complete before moving onto other things. E.g.
/// MonitorBlockingTask(output);
/// ... call to blocking API here ...
/// BlockingTaskComplete();
/// </summary>
public void BlockingTaskComplete()
{
_progressMonitor.AsyncComplete();
_progressMonitor = null;
}