Refactoring: Abstrakte Klassen duerfen keine Kenntnis ueber ihre Kinder haben #18

$show_unavailable = ($this instanceof xvmpVideosGUI) || ($this instanceof xvmpContentGUI);
$response->html = $this->renderer_factory->playerModal()->render($playModalDto, $async, $show_unavailable);

inteface GetResponseHandler {

}


class GetAvailableResponseHandler implements GetResponseHandler {
     /** @param GetResponseHandler[] $nextHandlers **/
     public function handle(GetAvailableResponse $command, array $nextHandlers): string {
         if(xzy === false) {
              $nextHandler = array_shift($nextHandlers);
              return $nextHandler->handle($command, $nextHandlers)
         }
 

         return renderXYZ
     }
}



GetUnAvailableResponseHandler implements GetResponseHandler {
     public function handle(GetAvailableResponse $command, array $nextHandlers): string {

     }
}