public static function GetRelationQueriesEx($sRelCode)
 {
     switch ($sRelCode) {
         case 'impacts':
             $aRels = array('webapplication' => array('_legacy_' => false, 'sDirection' => 'both', 'sDefinedInClass' => 'WebServer', 'sNeighbour' => 'webapplication', 'sQueryDown' => NULL, 'sQueryUp' => NULL, 'sAttribute' => 'webapp_list'));
             return array_merge($aRels, parent::GetRelationQueriesEx($sRelCode));
         default:
             return parent::GetRelationQueriesEx($sRelCode);
     }
 }