void HistoricalPositionAddedMessage(object?sender, HistoricalPositionAddedEventArgs e) { historyManager?.AddPosition(e.Position); }
protected virtual void OnHistoricalPositionAddedMessage(HistoricalPositionAddedEventArgs e) { EventHandler <HistoricalPositionAddedEventArgs>?handler = HistoricalPositionAddedMessage; handler?.Invoke(this, e); }