@Override
    public RegionAttributes beforeCreate(final Region parent, final String regionName,
        final RegionAttributes attrs, final InternalRegionArguments internalRegionArgs) {
      return attrs;
    }
Allows spying on operations that happen to an the regions underlying a lucene index.
geode-lucene/geode-lucene-test/src/main/java/org/apache/geode/cache/lucene/test/IndexRegionSpy.java