private PdxInstanceFactory createPdxInstanceFactory() {
    InternalCache cache = getCache();
    return cache.createPdxInstanceFactory(JSONFormatter.JSON_CLASSNAME, false);
  }
This class is intermediate class to create PdxInstance.
geode-core/src/main/java/org/apache/geode/pdx/internal/json/PdxInstanceSortedHelper.java