App\Managers\MenuBuilderManager::instantiateHandler PHP Method

    private function instantiateHandler($menuHandlerName = null)
    {
        // If no specific menu handler class name is specified, use the default as per the configuration.
        if (null == $menuHandlerName) {
            // Get the menu handler class name from the config.
            $menuHandlerName = Setting::get('menu-builder.framework_handler');
            // If the class name was resolved via ::class (PHP 5.5+)
            if (stripos($menuHandlerName, '::class') !== false) {
                $end = -1 * strlen('::class');
                $menuHandlerName = substr($menuHandlerName, 0, $end);
            }
        }
        // Instantiate the menuHandler and return it.
        $menuHandler = new $menuHandlerName($this->app);
        return $menuHandler;
    }