@Override
    public void fromData(PdxReader in) {
      id = in.readInt("id");
      _ticker = in.readString("ticker");
      _price = in.readInt("price");
      idTickers = (Map) in.readObject("idTickers");
      positions = (HashMap) in.readObject("positions");
      test = (TestObject2) in.readObject("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