@Override
      public void remove() {
        throw new UnsupportedOperationException();
      }
    };
  }

  static <T extends @Nullable Object> T get(Iterator<T> iterator, int position) {
    for (int i = 0; i < position; i++) {
      iterator.next();
    }
    return iterator.next();
  }

  static void fail(Throwable cause, Object message) {

      @Override
      public void remove() {
        throw new UnsupportedOperationException();
      }
    };
  }

  static <T extends @Nullable Object> T get(Iterator<T> iterator, int position) {
    for (int i = 0; i < position; i++) {
      iterator.next();
    }
    return iterator.next();
  }

  static void fail(Throwable cause, Object message) {