void runInitializer(InternalCache cache) {
    Declarable initializer = getInitializer();
    if (initializer != null) {
      initializer.initialize(cache, getInitializerProps());
      // for backwards compatibility
      initializer.init(getInitializerProps());
    }
  }
Returns whether PdxInstance is preferred for PDX types instead of Java object.

@see CacheFactory#setPdxReadSerialized(boolean)
@since GemFire 6.6
geode-core/src/main/java/org/apache/geode/internal/cache/xmlcache/CacheCreation.java