Thruway\Role\Dealer::handleSendWelcomeMessage PHP Метод

    public function handleSendWelcomeMessage(MessageEvent $event)
    {
        /** @var WelcomeMessage $welcomeMessage */
        $welcomeMessage = $event->message;
        //Tell the welcome message what features we support
        $welcomeMessage->addFeatures('dealer', $this->getFeatures());
    }