code: private static Class<?> getInvalidBusinessExtends(Class<?> wrapperInterface)
      {
          if ((EJBLocalObject.class).isAssignableFrom(wrapperInterface))
              return EJBLocalObject.class;
          if ((EJBLocalHome.class).isAssignableFrom(wrapperInterface))
              return EJBLocalHome.class;
          if ((EJBObject.class).isAssignableFrom(wrapperInterface))
              return EJBObject.class;
          if ((EJBHome.class).isAssignableFrom(wrapperInterface))
              return EJBHome.class;
  
          return null;
      }
docs: d457128.2