@Override
    public boolean equals(Object o) {
      GemFireCacheImpl.getInstance().getLogger()
          .fine("In TestObject2.equals() this: " + this + " other :" + o);
      TestObject2 other = (TestObject2) o;
      return _id == other._id;
    }
Starts a cache server on the given port, using the given deserializeValues and
notifyBySubscription to serve up the given region.
geode-core/src/distributedTest/java/org/apache/geode/cache/query/dunit/PDXQueryTestBase.java