@Override
  protected RegionAttributes createServerCacheAttributes() {
    AttributesFactory factory = new AttributesFactory();
    factory.setDataPolicy(DataPolicy.PARTITION);
    factory.setPartitionAttributes((new PartitionAttributesFactory()).create());
    return factory.create();
  }
subclass of InterestListEndpointDUnitTest to exercise partitioned regions
geode-core/src/distributedTest/java/org/apache/geode/internal/cache/tier/sockets/InterestListEndpointPRDUnitTest.java