code: protected function getRequestParameter($name)
      {
          $request = \OxidEsales\Eshop\Core\Registry::get(\OxidEsales\Eshop\Core\Request::class);
  
          return $request->getRequestParameter($name);
      }
docs: Wrapper for \OxidEsales\Eshop\Core\Request::getRequestParameter()
  
  @param string $name Parameter name
  
  @return mixed