void removePersistentPR(String name) {
    if (isClosed() && getOwnedByRegion()) {
      // A region owned disk store will destroy
      // itself when all buckets are removed, resulting
      // in an exception when this method is called.
      // Do nothing if the disk store is already
      // closed
      return;
    }
    getDiskInitFile().destroyPersistentPR(name);
  }
Returns a set of the disk regions that are using this disk store. Note that this set is read
only and live (its contents may change if the regions using this disk store changes).
geode-core/src/main/java/org/apache/geode/internal/cache/DiskStoreImpl.java