code: def test_key(self):
      entity = fake_cloud_client.make_entity(("abc", "1"))
      self.assertEqual(
          entity.key, fake_cloud_client.FakeDatastoreKey("abc", "1")
      )
  
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 1 for calling the FakeDatastoreEntityTest obj's underlying member method code with example usage: obj.test_key() without return types