def evaluate(self,
                 results,
                 metric='mIoU',
                 logger=None,
                 imgfile_prefix=None,
                 efficient_test=False):
        """Evaluation in Cityscapes/default protocol.

        Args:
            results (list): Testing results of the dataset.
            metric (str | list[str]): Metrics to be evaluated.
            logger (logging.Logger | None | str): Logger used for printing
                related information during evaluation. Default: None.
            imgfile_prefix (str | None): The prefix of output image file,
                for cityscapes evaluation only. It includes the file path and
                the prefix of filename, e.g., "a/b/prefix".
                If results are evaluated with cityscapes protocol, it would be
                the prefix of output png files. The output files would be
                png images under folder "a/b/prefix/xxx.png", where "xxx" is
                the image name of cityscapes. If not specified, a temp file
                will be created for evaluation.
                Default: None.

        Returns:
            dict[str, float]: Cityscapes/default metrics.
        """

        eval_results = dict()
        metrics = metric.copy() if isinstance(metric, list) else [metric]
        if 'cityscapes' in metrics:
            eval_results.update(
                self._evaluate_cityscapes(results, logger, imgfile_prefix))
            metrics.remove('cityscapes')
        if len(metrics) > 0:
            eval_results.update(
                super(CityscapesDataset,
                      self).evaluate(results, metrics, logger, efficient_test))

        return eval_results
Evaluation in Cityscapes/default protocol.

        Args:
            results (list): Testing results of the dataset.
            metric (str | list[str]): Metrics to be evaluated.
            logger (logging.Logger | None | str): Logger used for printing
                related information during evaluation. Default: None.
            imgfile_prefix (str | None): The prefix of output image file,
                for cityscapes evaluation only. It includes the file path and
                the prefix of filename, e.g., "a/b/prefix".
                If results are evaluated with cityscapes protocol, it would be
                the prefix of output png files. The output files would be
                png images under folder "a/b/prefix/xxx.png", where "xxx" is
                the image name of cityscapes. If not specified, a temp file
                will be created for evaluation.
                Default: None.

        Returns:
            dict[str, float]: Cityscapes/default metrics.
        
ControlNet-v1-1-nightly/annotator/uniformer/mmseg/datasets/cityscapes.py