code: public function getParameterFilterWidgets(
          $arrIds,
          $arrFilterUrl,
          $arrJumpTo,
          FrontendFilterOptions $objFrontendFilterOptions
      ) {
          $arrParams = array();
          foreach ($this->arrChildren as $objSetting) {
              $arrParams = array_merge(
                  $arrParams,
                  $objSetting->getParameterFilterWidgets($arrIds, $arrFilterUrl, $arrJumpTo, $objFrontendFilterOptions)
              );
          }
          return $arrParams;
      }
docs: {@inheritdoc}