Mmanos\Social\SocialController::linkProvider PHP Method

    protected function linkProvider($user_id, $provider, $provider_id, $access_token)
    {
        $user_provider = new Provider();
        $user_provider->user_id = $user_id;
        $user_provider->provider = strtolower($provider);
        $user_provider->provider_id = $provider_id;
        $user_provider->access_token = $access_token;
        $user_provider->save();
        return $user_provider;
    }