code: def tearDown(self):
      os.remove(self.fp.name)
      self.fp = None
  
imports: import os
  import unittest
  from tempfile import NamedTemporaryFile
  import tabpy
  from tabpy.tabpy_server.app.util import validate_cert
  from tabpy.tabpy_server.app.app import TabPyApp
  from unittest.mock import patch
label_desc: Use image node_id 6 for calling the TestTransferProtocolValidation obj's underlying member method code with example usage: obj.tearDown() without return types