@Override
  long getEstimatedLocalSize() {
    final PartitionedRegionDataStore ds = dataStore;
    if (ds != null) {
      return ds.getEstimatedLocalBucketSize(false);
    } else {
      return 0;
    }
  }
Get the VSD statistics type

@return the statistics instance specific to this Partitioned Region
geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegion.java