private ClassLoaderAccess getClassLoaderAccess() {
   if (classLoaderAccess == null) {
     MetadataBuildingOptions options = getMetadataBuildingOptions();
     ClassLoaderService classLoaderService =
         options.getServiceRegistry().getService(ClassLoaderService.class);
     classLoaderAccess =
         new ClassLoaderAccessImpl(options.getTempClassLoader(), classLoaderService);
   }
   return classLoaderAccess;
 }