protected override IDisposable SubscribeCore(IObserver <T> observer, IDisposable cancel)
{
var fromCoroutineObserver = new FromCoroutine(observer, cancel);
#if (ENABLE_MONO_BLEEDING_EDGE_EDITOR || ENABLE_MONO_BLEEDING_EDGE_STANDALONE)
var moreCancel = new CancellationDisposable();
var token = moreCancel.Token;
#else
var moreCancel = new BooleanDisposable();
var token = new CancellationToken(moreCancel);
#endif
MainThreadDispatcher.SendStartCoroutine(coroutine(fromCoroutineObserver, token));
return(moreCancel);
}
