code: def tearDown(self):
      os.unlink(self.tempFile.name)
      self.sc.stop()
  
imports: import os
  import random
  import stat
  import sys
  import tempfile
  import time
  import unittest
  from pyspark import SparkConf, SparkContext, TaskContext, BarrierTaskContext
  from pyspark.testing.utils import PySparkTestCase, SPARK_HOME, eventually
label_desc: Use image node_id 4 for calling the TaskContextTestsWithResources obj's underlying member method code with example usage: obj.tearDown() without return types