code: def testEquals(self):
      message = unittest_pb2.TestEmptyMessage()
      message.ParseFromString(self.all_fields_data)
      self.assertEqual(self.empty_message, message)
  
      self.all_fields.ClearField("optional_string")
      message.ParseFromString(self.all_fields.SerializeToString())
      self.assertNotEqual(self.empty_message, message)
  
imports: from google.protobuf import unittest_mset_pb2
  from google.protobuf import unittest_pb2
  from google.protobuf import unittest_proto3_arena_pb2
  from google.protobuf.internal import api_implementation
  from google.protobuf.internal import encoder
  from google.protobuf.internal import message_set_extensions_pb2
  from google.protobuf.internal import missing_enum_values_pb2
  from google.protobuf.internal import test_util
  from google.protobuf.internal import testing_refleaks
  from google.protobuf.internal import type_checkers
label_desc: Use image node_id 7 for calling the UnknownFieldsTest obj's underlying member method code with example usage: obj.testEquals() without return types