def METHOD_NAME(self, model_learnable: ModelLearnable, fl_ctx: FLContext):
    """Saves model.
    Args:
        model_learnable: ModelLearnable object
        fl_ctx: FLContext
    """
    model_learnable_info = {k: str(type(v)) for k, v in model_learnable.items()}
    self.logger.info(f"Saving aggregated server weights: \n {model_learnable_info}")
    with open(self._fobs_save_path, "wb") as f:
        fobs.dump(model_learnable, f)