/** Returns the display name for this permission key (localized and escaped accordingly to $format)
  * @param string $format = 'html'
  *    Escape the result in html format (if $format is 'html').
  *    If $format is 'text' or any other value, the display name won't be escaped.
  *
  * @return string
  */
 public function getPermissionKeyDisplayName($format = "html")
 {
     return parent::getPermissionKeyDisplayName($format);
 }