code: public function remove(): bool
      {
          if ($this->test(\sndsgd\Fs::EXISTS | \sndsgd\Fs::READABLE | \sndsgd\Fs::WRITABLE) === false) {
              $this->error = "failed to remove directory; {$this->error}";
              return false;
          }
  
          foreach ($this->getList() as $entity) {
              if ($entity->remove() === false) {
                  $this->error = $entity->getError();
                  return false;
              }
          }
  
          if (@rmdir($this->path) === false) {
              $this->setError("failed to remove directory '{$this->path}'");
              return false;
          }
  
          return true;
      }
docs: Recursively remove the directory
  
  @return bool