protected function registerOptimus()
    {
        $this->app->singleton('Jenssegers\Optimus\Optimus', function ($app) {
            return new Optimus(
                $app['config']['fakeid.prime'],
                $app['config']['fakeid.inverse'],
                $app['config']['fakeid.random']
            );
        });

        $this->app->alias('Jenssegers\Optimus\Optimus', 'optimus');
        $this->app->alias('Jenssegers\Optimus\Optimus', 'fakeid');
    }