code: public function createDictionaryItems($dictionaryId, $params)
      {
          $url = $this->_getApiServiceUri().'dictionary/'.$dictionaryId.'/items';
          $result = $this->_fetch($url, \Zend_Http_Client::PATCH, $params);
  
          return $result;
      }
docs: Create dictionary items
  
  @param $dictionaryId
  @param $params
  @return bool|mixed
  @throws LocalizedException