Pimcore\Cache::clearTag PHP Method

    public static function clearTag($tag)
    {
        self::clearTags([$tag]);
    }

 protected function execute(InputInterface $input, OutputInterface $output)
 {
     if ($input->getOption("tags")) {
         $tags = explode(",", $input->getOption("tags"));
         Cache::clearTags($tags);
     } elseif ($input->getOption("output")) {
         Cache::clearTag("output");
     } else {
         Cache::clearAll();
     }
 }