public StreamingPubSubHostGrain(OrleansStreamingPubSub pubSub)
 {
     this.pubSub = pubSub;
 }
 public StreamingPubSubHostGrain(OrleansStreamingPubSub pubSub, ILogger <OrleansStreamingPubSub> logger)
 {
     this.pubSub = pubSub;
     this.logger = logger;
 }