void OnCollectionAdded(Collection collection)
 {
     CollectionAdded?.Invoke(collection);
     if (tickergenerator.CollectionCount == 1)
     {
         context.GetModule <TickerModule>().AddSource(tickergenerator);
     }
 }
 internal virtual void RaiseCollectionAdded(LocalizationTableCollection collection) => CollectionAdded?.Invoke(collection);