code: def tearDown(self):
      pass
  
file_path: BigDL/python/chronos/test/bigdl/chronos/detector/anomaly/test_th_detector.py
imports: import pytest
  import numpy
  import pandas
  from unittest import TestCase
  from bigdl.chronos.utils import LazyImport
  from bigdl.chronos.detector.anomaly import ThresholdDetector
  from ...None import op_torch
label_desc: Use image node_id 2 for calling the TestThresholdDetector obj's underlying member method code with example usage: obj.tearDown() without return types