@Override
  public PartitionAttributes getPartitionAttributes() {
    return partitionAttributes;
  }
Causes this region attributes to inherit all of the attributes of its "parent" attributes
specified by its <code>refid</code>.

@param cache Used to look up named region attributes

@throws IllegalStateException If no region attributes named <code>refid</code> exist.

@since GemFire 4.1
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/RegionAttributesCreation.java