public override IEnumerator<EventBean> GetEnumerator()
        {
            if (Filter == null) {
                return ConsumerCallback.GetEnumerator();
            }

            return FilteredEventEnumerator.For(Filter, ConsumerCallback.GetEnumerator(), exprEvaluatorContext);
        }
 public void Stop(AgentInstanceStopServices services)
 {
     ConsumerCallback.Stopped(this);
 }