docstr: teardown any state that was previously setup with a setup_method
  call.
docstr_tok: ["teardown","any","state","that","was","previously","setup","with","a","setup_method","call","."]
code: def tearDown(self):
      """teardown any state that was previously setup with a setup_method
      call.
      """
      stop_orca_context()
  
imports: import os
  import pytest
  import shutil
  import tempfile
  from unittest import TestCase
  import numpy
  import tensorflow
  from bigdl.orca import init_orca_context, stop_orca_context
  from bigdl.orca.learn.tf2 import Estimator
  from bigdl.orca import OrcaContext
label_desc: Use image node_id 2 for calling the TestTFEstimatorBasic obj's underlying member method code with example usage: obj.tearDown() without return types