only save if option is enabled

            optimizer_saved_dict['optimizer_name'] = self.optimizer_name

        torch.save(state_dict, filename)

        if self.optimizer_state_dict:

        if shared.opts.save_optimizer_state and self.optimizer_state_dict:

            optimizer_saved_dict['hash'] = sd_models.model_hash(filename)

            optimizer_saved_dict['optimizer_state_dict'] = self.optimizer_state_dict

            torch.save(optimizer_saved_dict, filename + '.optim')