protected function generateValueNamesHelp($named_args_spec) {
    $first = true;
    $out = '';

    foreach($named_args_spec as $named_arg_spec) {
      $out .= ($first ? '' : ' ');

      if ($named_arg_spec['required']) {
        $out .= ConsoleFormat::applyformatToText('bold','yellow','<'.$named_arg_spec['name'].'>');
      } else {
        $out .= '[<'.$named_arg_spec['name'].'>]';
      }

      $first = false;
    }

    return $out;
  }