public function ProcessDataRequest($dataRequest)
 {
     if ($dataRequest == 'load') {
         $referenceNumber = $this->page->GetReferenceNumber();
         $rv = $this->manageReservationsService->LoadByReferenceNumber($referenceNumber, ServiceLocator::GetServer()->GetUserSession());
         $this->page->SetReservationJson($rv);
     }
     if ($dataRequest == 'attribute') {
         $referenceNumber = $this->page->GetReferenceNumber();
         $rv = $this->manageReservationsService->LoadByReferenceNumber($referenceNumber, ServiceLocator::GetServer()->GetUserSession());
         $attributeId = $this->page->GetAttributeId();
         $attribute = $this->attributeService->GetById($attributeId);
         $this->page->ShowAttribute($attribute, $rv->GetAttributeValue($attributeId));
     }
 }