def METHOD_NAME(self, tune_cfg, model, dataloader, q_func=None):
    """The function is used to do calibration and quanitization in post-training quantization.
    Args:
        tune_cfg(dict): The chosen tuning configuration.
        model (object): The model to do calibration.
        dataloader(object): The dataloader used to load calibration dataset.
        q_func (optional): training function for quantization aware training mode.
    """
    raise NotImplementedError