code: func (s *Server) stopCARootPruning() {
  	s.caPruningLock.Lock()
  	defer s.caPruningLock.Unlock()
  
  	if !s.caPruningEnabled {
  		return
  	}
  
  	close(s.caPruningCh)
  	s.caPruningEnabled = false
  }
docs: // stopCARootPruning stops the CARoot pruning process.