@Override
  public <K, V> Region<K, V> createVMRegion(String name, RegionAttributes<K, V> aRegionAttributes)
      throws RegionExistsException, TimeoutException {
    return createRegion(name, aRegionAttributes);
  }
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