WsdlToPhp\PackageGenerator\ConfigurationReader\ServiceReservedMethod::instance PHP Method

    public static function instance($filename = null)
    {
        return parent::instance(empty($filename) ? self::getDefaultConfigurationPath() : $filename);
    }

 /**
  * @return ServiceReservedMethod
  */
 public static function instance()
 {
     return ServiceReservedMethod::instance(__DIR__ . '/../resources/service_reserved_keywords.yml');
 }