public StatsViewModel(Engine _engine)
        {
            // TODO: Complete member initialization
            this._engine = _engine;

            this._engine.PageIndexed += _engine_PageIndexed;
            this._timer = new Timer(UpdateProcessedPerSecond, null, 1000, 1000);
        }
 public StopEngineCommand(Engine target)
 {
     this.target = target;
 }