keras/src/optimizers/adafactor.py/Adafactor/get_config
class Adafactor:    def get_config(self):
        config = super().get_config()

        config.update(
            {
                "beta_2_decay": self.beta_2_decay,
                "epsilon_1": self.epsilon_1,
                "epsilon_2": self.epsilon_2,
                "clip_threshold": self.clip_threshold,
                "relative_step": self.relative_step,
            }
        )
        return config