private function configure_api()
    {

        // ensure current annotations setting is an array of path or transform into it
        $current_annotations = config('l5-swagger.paths.annotations');
        if (! is_array($current_annotations))
            $current_annotations = [$current_annotations];

        // merge paths together and update config
        config([
            'l5-swagger.paths.annotations' => array_unique(array_merge($current_annotations, [
                __DIR__ . '/Models',
            ])),
        ]);
    }