/// <summary>
/// Return a linked CancelToken?
/// </summary>
/// <param name="token"></param>
public void StopEventLoop(CancellationToken token = default)
{
isLooping = false;
var clearOnDone = AwaitAllTasks().ContinueWith(_ => RunningTasks.Clear());
RunningTasks.GetOrAdd(clearOnDone.Id, clearOnDone);
}