class_docstr: Base model for re-identification.
code: def __init__(self, *args, **kwargs):
      if mmpretrain is None:
          raise RuntimeError(
              'Please run "pip install openmim" and '
              'run "mim install mmpretrain" to '
              "install mmpretrain first."
          )
      super().__init__(*args, **kwargs)
  
file_path: mmdetection/mmdet/models/reid/base_reid.py
imports: from typing import List, Optional
  import torch
  from mmdet.registry import MODELS
  from mmdet.structures import ReIDDataSample
label_desc: Use image node_id 1 to create a new BaseReID object from inherited base classes: ImageClassifier with example: obj = BaseReID()