/**
  * Removes the user data from the Latch server and the Mediawiki DB (unpairs the service)
  * @ret 1: unpairing OK, -1: unpairing error
  */
 public static function doUnpair()
 {
     $toRet = -1;
     //return value=-1, error during unpairing process
     global $wgUser;
     //mediawiki global var to get the userID that is currently logged into mediawiki
     //if(  dbHelper::isPaired( $wgUser->getId() )  )
     //{
     $api = dbHelper::getLatchApi();
     $accountId = dbHelper::getAccountId($wgUser->getId());
     if ($accountId != null) {
         $api->unpair($accountId);
         dbHelper::removeAccountId($wgUser->getId());
         $toRet = 1;
         //return value=1, unpairing process successful
     }
     //}
     return $toRet;
 }