@Override
  public String getDisplayName() {
    if (isUsedForPartitionedRegionBucket()) {
      return getPartitionedRegion().getName();
    }
    return regionName;
  }
Convenience method to get region name for logging/exception messages. if this region is an
instanceof bucket region, it returns the bucket region name

@return name of the region or the owning partitioned region
geode-core/src/main/java/org/apache/geode/internal/cache/LocalRegion.java