code: def setUp(self):
      self.tmp_dir = tempfile.TemporaryDirectory()
      self.ann_file_path = (
          "tests/data/crowdhuman_dataset/test_annotation_train.odgt",
      )
  
file_path: mmdetection/tests/test_evaluation/test_metrics/test_crowdhuman_metric.py
imports: import os.path
  import tempfile
  from unittest import TestCase
  import numpy
  import torch
  from mmdet.evaluation import CrowdHumanMetric
label_desc: Use image node_id 2 for calling the TestCrowdHumanMetric obj's underlying member method code with example usage: obj.setUp() without return types