public function loadServiceProvider($class)
    {
        $instance   = new $class;
        $key        = $class::getKey();
        $value      = $instance->boot($this);
        $this->register($key, $value);
    }

    public static function createDefaultApplication()
    {
        $app = Application::setFacadeApplication(new static);

        $app->loadServiceProvider(HelperServiceProvider::class);
        $app->loadServiceProvider(ConfigServiceProvider::class);
        $app->loadServiceProvider(LoaderServiceProvider::class);
        $app->loadServiceProvider(ScreenServiceProvider::class);


        return $app;
    }