def info(self):
        """dict: a dictionary of info about the object"""
        basic_info = {
            "num_gts": self.num_gts,
            "num_preds": self.num_preds,
            "gt_inds": self.gt_inds,
            "max_overlaps": self.max_overlaps,
            "labels": self.labels,
        }
        basic_info.update(self._extra_properties)
        return basic_info
dict: a dictionary of info about the object
ppdet/modeling/assigners/hungarian_assigner.py