AppserverIo\Appserver\ServletEngine\StandardSessionManager::find PHP Method

    public function find($id)
    {
        // return immediately if the requested session ID is empty
        if (empty($id)) {
            return;
        }
        // declare the session variable
        $session = null;
        // query whether or not the session with the passed ID exists
        if ($this->getSessions()->exists($id)) {
            $session = $this->getSessions()->get($id);
        } else {
            // iterate over the session handlers and try to un-persist the session
            /** @var \AppserverIo\Appserver\ServletEngine\Session\SessionHandlerInterface $sessionHandler */
            foreach ($this->getSessionHandlers() as $sessionHandler) {
                try {
                    if ($session = $sessionHandler->load($id)) {
                        $this->attach($session);
                        break;
                    }
                } catch (\Exception $e) {
                    // log the exception if a system logger is available
                    if ($logger = $this->getLogger(LoggerUtils::SYSTEM)) {
                        $logger->error($e->__toString());
                    }
                }
            }
        }
        // if we found a session, we've to check if it can be resumed
        if ($session instanceof ServletSessionInterface) {
            if ($session->canBeResumed()) {
                $session->resume();
                return $session;
            }
        }
    }