@Override
    public void toData(PdxWriter out) {
      out.writeInt("id", id);
      out.writeString("ticker", _ticker);
      out.writeInt("price", _price);
      out.writeObject("idTickers", idTickers);
      out.writeObject("positions", positions);
      out.writeObject("test", test);
    }
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