PayPal\Core\PPConfigManager::getInstance PHP Метод

    public static function getInstance()
    {
        if (!isset(self::$instance)) {
            self::$instance = new PPConfigManager();
        }
        return self::$instance;
    }

 public function getConfig()
 {
     if (!isset($this->config)) {
         $this->config = PPConfigManager::getInstance()->getConfigHashmap();
     }
     return $this->config;
 }