/**
  * getPreviousResultsUrl - get the url to go to see the previous results
  *
  * @return string url to previous results page
  */
 function getPreviousResultsUrl()
 {
     return parent::getPreviousResultsUrl() . '&forum_id=' . $this->forumId;
 }
 /**
  * getPreviousResultsUrl - get the url to go to see the previous results
  *
  * @return string url to previous results page
  */
 function getPreviousResultsUrl()
 {
     return parent::getPreviousResultsUrl() . '&atid=' . $this->artifactId;
 }