def prepare_test_data(self, index):
        """Prepare data for testing.

        Args:
            index (int): Index for accessing the target data.

        Returns:
            dict: Testing data dict of the corresponding index.
        """
        input_dict = self.get_data_info(index)
        self.pre_pipeline(input_dict)
        example = self.pipeline(input_dict)
        if self.is_vis_on_test:
            example = self.vectormap_pipeline(example, input_dict)
        return example
Prepare data for testing.

        Args:
            index (int): Index for accessing the target data.

        Returns:
            dict: Testing data dict of the corresponding index.
        
projects/mmdet3d_plugin/datasets/nuscenes_vad_dataset.py