There is no argument object in the PHP validator

Right now, views_plugin_argument_validate_php::options_form says

You may change the argument by setting "$handler->argument".

.
Compare to

  function validate_argument($argument) {
    // set up variables to make it easier to reference during the argument.
    $view = &$this->view;
    $handler = &$this->argument;

    ob_start();
    $result = eval($this->options['code']);
    ob_end_clean();
    return $result;
  }

Is it just me who does not see a $handler? On the other hand, $argument->argument exists and I think this is what the text wanted to say.