code: def test_deep_copy(self):
      entity1 = fake_cloud_client.make_entity(("abc", "1"))
      entity1["k1"] = ["v1"]
      self.assertEqual(
          entity1.key, fake_cloud_client.FakeDatastoreKey("abc", "1")
      )
      self.assertEqual(dict(entity1), {"k1": ["v1"]})
      entity2 = copy.deepcopy(entity1)
      entity2["k1"].append("v2")
      entity2["k3"] = "v3"
      self.assertIsInstance(
          entity2, fake_cloud_client.FakeDatastoreEntity
      )
      self.assertEqual(
          entity1.key, fake_cloud_client.FakeDatastoreKey("abc", "1")
      )
      self.assertEqual(dict(entity1), {"k1": ["v1"]})
      self.assertEqual(
          entity2.key, fake_cloud_client.FakeDatastoreKey("abc", "1")
      )
      self.assertEqual(dict(entity2), {"k1": ["v1", "v2"], "k3": "v3"})
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import copy
  from io import BytesIO
  import unittest
  from eval_lib.tests import fake_cloud_client
  from six import assertCountEqual
  from six import b
label_desc: Use image node_id 5 for calling the FakeDatastoreEntityTest obj's underlying member method code with example usage: obj.test_deep_copy() without return types