Nitmedia\Wkhtml2pdf\L5Wkhtml2pdfServiceProvider::register PHP Метод

    public function register()
    {
        $this->app['wkhtml2pdf'] = $this->app->share(function ($app) {
            return new Wkhtml2pdf(new LaravelConfig($app['config']), new LaravelView($app['view']));
        });
    }