    def _save_auxiliary_states(self):
        """
        To save the singer's look-up table in the checkpoint saving path
        """
        with open(
            os.path.join(self.tmp_checkpoint_save_path, self.cfg.preprocess.spk2id),
            "w",
            encoding="utf-8",
        ) as f:
            json.dump(self.singers, f, indent=4, ensure_ascii=False)
To save the singer's look-up table in the checkpoint saving path
models/svc/base/svc_trainer.py