/**
  * Calculates the time of this event.
  * @return the time after event starttime when this event has occured
  */
 public function getTime()
 {
     $eventTime = $this->getTimeStamp();
     $eventStartTime = Payone_Log4php_LoggerLoggingEvent::getStartTime();
     return number_format(($eventTime - $eventStartTime) * 1000, 0, '', '');
 }
 public function convert(Payone_Log4php_LoggerLoggingEvent $event)
 {
     $ts = $event->getTimeStamp() - $event->getStartTime();
     return number_format($ts, 4);
 }