protected function registerAccessManager()
    {
        // Bind AccessManager.
        $this->app->singleton(AccessManager::SERVICE_ID, function (Application $app) {
            /** @var Repository $configRepo */
            $configRepo = $app->make('config');

            return new AccessManager(
                $configRepo->get('personality-insights.default_credentials'),
                $configRepo->get('personality-insights.api_version')
            );
        });
    }