code: private function reload(): void
      {
          $this->sha = (string) @sha1_file($this->corePath);
  
          if (empty($this->sha)) {
              throw new RuntimeException(
                  'Unable to locate qless-core file at path: ' . $this->corePath
              );
          }
  
          $res = $this->redis->script('exists', $this->sha);
  
          if ($res[0] !== 1) {
              $this->sha = $this->redis->script('load', file_get_contents($this->corePath));
          }
      }
docs: Reloads the qless-core code.
  
  @return void
  
  @throws RuntimeException