code: public function getCountryName($code)
      {
          $name = Intl::getRegionBundle()->getCountryName(strtoupper($code), $this->getRequest()->getLanguageCode() ? : 'en');
          if($name) {
              return $name;
          }
          return $code;
      }
docs: Country Name from Code
  
  @param string $code
  @return null|string