/**
  * Does child service already exist in parent spool $parentSpoolId
  *
  * Method will check to see if the child service $service already exists in the parent spool $parentSpoolId. Will only look
  * in the first level (will not recurse).
  *
  * @access public
  * @param int $parentSpoolId The parent spool ID
  * @param string $service The child service
  * @return array The accountingspool child record if the child service exists, NULL if not, FALSE on error
  */
 public function isChildServiceInSpool($parentSpoolId, $service)
 {
     if (!isId($parentSpoolId) || $service == '') {
         return false;
     }
     return parent::isChildServiceInSpool($this->getid(), $parentSpoolId, $service);
 }