@Override
  public Collection<DiskStore> listDiskStoresIncludingRegionOwned() {
    Collection<DiskStore> allDiskStores = new HashSet<>();
    allDiskStores.addAll(diskStores.values());
    allDiskStores.addAll(regionOwnedDiskStores.values());
    return allDiskStores;
  }
Used by unit tests to allow them to change the default disk store name.
geode-core/src/main/java/org/apache/geode/internal/cache/GemFireCacheImpl.java