@Override
  public RegionTTLExpiryTask getRegionTTLExpiryTask() {
    return regionTTLExpiryTask;
  }
Used by unit tests to get access to the RegionTTLExpiryTask of this region. Returns null if no
task exists.
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java