@Override
  public boolean isInternalRegion() {
    return isSecret() || isUsedForMetaRegion() || isUsedForPartitionedRegionAdmin()
        || isUsedForPartitionedRegionBucket();
  }
@return true if this is not a user visible region
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java