code: def setUp(self):
      self.tmp_dir = tempfile.TemporaryDirectory()
  
imports: import os.path
  import tempfile
  import unittest
  import numpy
  import pycocotools.mask
  import torch
  from mmdet.evaluation.metrics import LVISMetric
  from mmengine.fileio import dump
label_desc: Use image node_id 3 for calling the TestLVISMetric obj's underlying member method code with example usage: obj.setUp() without return types