code: func (s *Service) DropAll(w io.Writer) error {
  	if err := s.DropAllImages(w); err != nil {
  		return err
  	}
  	if err := s.DropAllRaws(w); err != nil {
  		return err
  	}
  	return nil
  }
docs: // DropAll deletes all remote resources (both images and raw files) from Cloudinary.
  // File names are written to io.Writer if available.