code: def setUpClass(cls):
      init_default_scope("mmdet")
  
file_path: mmdetection/tests/test_evaluation/test_metrics/test_reid_metric.py
imports: from unittest import TestCase
  import torch
  from mmengine.registry import init_default_scope
  from mmdet.registry import METRICS
  from mmdet.structures import ReIDDataSample
label_desc: Use image node_id 1 for calling the TestReIDMetrics obj's underlying member method code with example usage: obj.setUpClass(cls) without return types