public function captureStop(EventInterface $event)
    {
        $time = microtime(true);

        $eventName = $event->getName();
        if ($eventName && isset($this->timers[$eventName])) {
            $this->timers[$eventName]['stop'] = $time;

            return;
        }
        $this->timers[$this->index]['stop'] = $time;
    }