protected function addRedisSentinelBroadcaster()
    {
        $this->app->make(BroadcastFactory::class)
            ->extend('redis-sentinel', function ($app, $conf) {
                $redis = $app->make('redis-sentinel.manager');
                $connection = Arr::get($conf, 'connection', 'default');

                return new RedisBroadcaster($redis, $connection);
            });
    }