code: public function cloneVersion($curVersion)
      {
          $url = $this->_getApiServiceUri() . 'version/'.$curVersion.'/clone';
          $result = $this->_fetch($url, \Zend_Http_Client::PUT);
  
          if (!$result) {
              throw new LocalizedException(__('Failed to clone active version.'));
          }
  
          return $result;
      }
docs: Clone the current configuration into a new version.
  
  @param $curVersion
  @return bool|mixed
  @throws LocalizedException