code: public static void notNull(Object... objects) {
          notNull((Object) objects);
          for (Object object : objects) {
              notNull(object);
          }
      }
docs: Verifies that the given list of objects does not contain a single element that is <code>null</code> and throws an
  <code>IllegalArgumentException</code> with a default message otherwise.
  
  @param objects objects that should be checked