code: protected function loadDestinations(PriceXplorerExtremeSearchOptions $params)
      {
          foreach ($params->destinations as $destination) {
              $this->itineraryGrp[] = new ItineraryGrp(null, $destination);
          }
  
          foreach ($params->destinationCountries as $destinationCountry) {
              $tmpGrp = new ItineraryGrp();
  
              $tmpGrp->locationInfo = new LocationInfo(LocationInfo::LOC_COUNTRY);
  
              $tmpGrp->locationInfo->locationDescription = new LocationIdentificationType();
              $tmpGrp->locationInfo->locationDescription->qualifier = LocationIdentificationType::QUAL_DESTINATION;
              $tmpGrp->locationInfo->locationDescription->code = $destinationCountry;
  
              $this->itineraryGrp[] = $tmpGrp;
          }
      }
docs: @param PriceXplorerExtremeSearchOptions $params