code: public function css(Parameters $parameters, Config $config)
      {
          $collection = $parameters->get("collection");
  
  
  
          if (!isset($config->assets->css->collections[$collection])) {
              throw new RouteNotFoundException();
          }
  
  
  
          $file = $config->assets->css->collections[$collection];
  
  
  
          $cssFileName = Less_Cache::Get(
              [
                  $file => $config->url->baseUri,
              ],
              [
                  "cache_dir" => $config->assets->css->cacheDir,
              ]
          );
  
          $content = file_get_contents(
              $config->assets->css->cacheDir . "/" . $cssFileName
          );
  
  
  
          return new Response(
              $content,
              Response::HTTP_OK,
              [
                  "Content-Type" => "text/css",
              ]
          );
      }
docs: @Uri("/css/{collection}")
  
  @Requirements(
  "collection"="[a-z0-9\-]+"
  )