code: @SuppressWarnings({"rawtypes"})
      @Override
      public void open(Map conf, TopologyContext context, SpoutOutputCollector collector)
      {
          super.open(conf, context, collector);
          this.rabbitmqClient = this.contextHelper.getComponent(RabbitmqClient.class);
          // RabbitMQの取得対象キュー名称を「queueName」+「SpoutId(0オリジン)」で算出し、初期化
          this.targetQueueName = this.queueName + context.getThisTaskIndex();
      }
docs: {@inheritDoc}