class_docstr: Dataset class for the MS COCO Object Detection using Single Shot Object Detector (SSD).
  
  Args:
      opts: Command-line arguments
code: def extra_repr(self) -> str:
      extra_repr_str = super().extra_repr()
      extra_repr_str += (
          f"\n\tmatcher={self.match_prior}"
          f"\n\tanchor_generator={self.anchor_box_generator}"
      )
      return extra_repr_str
  
imports: import argparse
  import math
  from typing import List, Mapping, Tuple, Union
  import torch
  from torch import Tensor
  from cvnets.anchor_generator import build_anchor_generator
  from cvnets.matcher_det import build_matcher
  from data.collate_fns import COLLATE_FN_REGISTRY
  from data.datasets import DATASET_REGISTRY
  from data.datasets.detection.coco_base import COCODetection
  from data.transforms import image_pil
  from data.transforms.common import Compose
  from utils import logger
label_desc: Use image node_id 6 for calling the COCODetectionSSD obj's underlying member method code with example usage: obj.extra_repr() and returns: extra_repr_str