/**
  * Show created/updated information in plain text.
  * Uses {@link _echo_plain_text_user()} to format users.
  * @param AUDITABLE $obj
  * @access private
  */
 protected function _echo_plain_text_users($obj)
 {
     $this->_echo_plain_text_user('Created', $obj->creator(), $obj->time_created);
     if ($obj->modified()) {
         $this->_echo_plain_text_user('Updated', $obj->modifier(), $obj->time_modified);
     }
 }