code: protected void preloadClass(final Class<?> objectClass) {
          try {
              Class.forName(objectClass.getName());
          } catch (final ClassNotFoundException e) {
              LOGGER.error(CLASS_NOT_FOUND, e, objectClass.getName());
          }
      }
docs: Preload class, useful to preload field initialized with JRebirth Builder.
  
  @param objectClass the object class to load from classloader