code: def tearDown(self):
      pass
  
file_path: BigDL/python/chronos/test/bigdl/chronos/metric/test_forecast_metrics.py
imports: import numpy
  import pytest
  import time
  from unittest import TestCase
  from numpy.testing import assert_almost_equal
  from numpy.testing import assert_array_almost_equal
  from bigdl.chronos.metric.forecast_metrics import Evaluator
  from ..None import op_torch, op_tf2, op_distributed, op_diff_set_all
label_desc: Use image node_id 2 for calling the TestChronosForecastMetrics obj's underlying member method code with example usage: obj.tearDown() without return types