public SampleObserver(IGraphLogger logger)
{
// Log unhandled exceptions.
AppDomain.CurrentDomain.UnhandledException += (_, e) => logger.Error(e.ExceptionObject as Exception, $"Unhandled exception");
TaskScheduler.UnobservedTaskException += (_, e) => logger.Error(e.Exception, "Unobserved task exception");
this.subscription = logger.Subscribe(this);
}
