/**
  * conditional set time fields on the payload
  * @param Varien_Object
  * @param IOrderContext
  */
 protected function _setTimeData(Varien_Object $sessionInfo, IOrderContext $orderContext)
 {
     $lastLogin = $sessionInfo->getLastLogin();
     if ($lastLogin) {
         $orderContext->setLastLogin($lastLogin);
     }
     $timeSpentOnSite = $sessionInfo->getTimeSpentOnSite();
     if ($timeSpentOnSite) {
         $orderContext->setTimeSpentOnSite($timeSpentOnSite);
     }
 }