code: protected function loadBusinessId(PointOfRefSearchOptions $params)
      {
          if ($this->checkAnyNotEmpty($params->businessCategory, $params->businessForeignKey)) {
              $this->porFndQryParams->businessId = new BusinessId(
                  $params->businessCategory,
                  $params->businessForeignKey
              );
          }
      }
docs: Search by Business ID?
  
  @param PointOfRefSearchOptions $params