Thruway\Logging\Logger::alert PHP Method

    public static function alert($object = null, $message, $context = [])
    {
        static::log($object, LogLevel::ALERT, $message, $context);
    }

 public function handleRouterStart(RouterStartEvent $event)
 {
     $server = new Server($this->bindAddress, $this->port, false, ["wamp.2.json"]);
     Logger::info($this, "Websocket listening on " . $this->bindAddress . ":" . $this->port);
     $this->serverDisposable = $server->subscribe(new CallbackObserver(function (MessageSubject $ms) {
         $this->createNewSessionForMessageSubject($ms);
     }, function (\Exception $err) {
         Logger::error($this, "Received error on server: " . $err->getMessage());
     }, function () {
         Logger::alert($this, "Completed. Not sure if we should ever do that.");
     }));
 }