@Override
      public void throttleTime(long nanos) {
        incPartitionedRegionQueueThrottleTime(nanos);
      }
Returns a helper object so that the partitioned region queue can record its stats to the proper
distribution stats.

@since GemFire 5.0
geode-core/src/main/java/org/apache/geode/distributed/internal/DistributionStats.java