private IEnumerator Coroutine2(Logger logger, UniRx.IObservable <string> stream) { logger.Add("1"); yield return(null); logger.Add("Subscribe"); var yieldInstruction = stream.Do(new TestObserver <string>(logger)).ToYieldInstruction(); yield return(yieldInstruction); if (yieldInstruction.HasError) { logger.Add($"Error:{yieldInstruction.Error.Message}"); yield break; } if (yieldInstruction.HasResult) { logger.Add($"Result:{yieldInstruction.Result}"); } yield return(null); logger.Add("2"); }