docs: protected void addFetches(final Root<PortletEntityImpl> definitionRoot) {
          definitionRoot
                  .fetch(PortletEntityImpl_.portletPreferences, JoinType.LEFT)
                  .fetch(PortletPreferencesImpl_.portletPreferences, JoinType.LEFT)
                  .fetch(PortletPreferenceImpl_.values, JoinType.LEFT);
          definitionRoot.fetch(PortletEntityImpl_.windowStates, JoinType.LEFT);
      }