code: def testPickleSupport(self):
      golden_data = test_util.GoldenFile("golden_message").read()
      golden_message = unittest_pb2.TestAllTypes()
      golden_message.ParseFromString(golden_data)
      pickled_message = pickle.dumps(golden_message)
  
      unpickled_message = pickle.loads(pickled_message)
      self.assertEquals(unpickled_message, golden_message)
  
imports: import copy
  import math
  import operator
  import pickle
  import unittest
  from google.protobuf import unittest_import_pb2
  from google.protobuf import unittest_pb2
  from google.protobuf.internal import api_implementation
  from google.protobuf.internal import test_util
  from google.protobuf import message
label_desc: Use image node_id 5 for calling the MessageTest obj's underlying member method code with example usage: obj.testPickleSupport() without return types