public String getPrName() {
    assert isBucket();
    String bn = PartitionedRegionHelper.getBucketName(getName());
    return PartitionedRegionHelper.getPRPath(bn);
  }
Used to initialize a PlaceHolderDiskRegion for a region that is being closed

@param drv the region that is being closed
geode-core/src/main/java/org/apache/geode/internal/cache/AbstractDiskRegion.java