public ICancellable Enqueue(Action <CancellationToken> action, TaskPriority priority)
{
var t = new StandingTask();
Run(action, t);
return(t);
}
private static async void Run(Action <CancellationToken> action, StandingTask t)
{
await Task.Delay(10).ConfigureAwait(false);
t.IsRunning = true;
action.Invoke(default);
