code: protected function redirectPost($arrParams)
      {
          // @codingStandardsIgnoreStart
          @trigger_error(
              sprintf('"%1$s" has been deprecated in favor of the new "FilterUrlBuilder"', __METHOD__),
              E_USER_DEPRECATED
          );
          // @codingStandardsIgnoreEnd
          $jumpTo     = $this->objFilterConfig->getJumpTo();
          $dispatcher = $this->getDispatcher();
          $filterUrl  = new FilterUrl($jumpTo, [], $arrParams);
          $dispatcher->dispatch(
              ContaoEvents::CONTROLLER_REDIRECT,
              new RedirectEvent($this->filterUrlBuilder->generate($filterUrl))
          );
      }
docs: Redirect the browser to the url determined by the given params (configured jumpTo page will get used).
  
  This will exit the script!
  
  @param array $arrParams The URL parameters to use.
  
  @return void
  
  @deprecated Do not use.