code: def assertClientContains(self, c):
      self.assertEqual("tpu_name", c._tpu)
      self.assertEqual(True, c._use_api)
      self.assertIsNone(c._credentials)
      self.assertEqual("test-project", c._project)
      self.assertEqual("us-central1-c", c._zone)
      self.assertIsNone(c._discovery_url)
      self.assertEqual(
          [{"ipAddress": "10.1.2.3", "port": "8470"}],
          c.network_endpoints(),
      )
  
imports: import datetime
  import json
  import os
  import time
  import urllib
  from absl import flags
  from tensorflow.python.platform import test
  from tensorflow.python.tpu.client import client
label_desc: Use image node_id 16 for calling the CloudTpuClientTest obj's underlying member method code with example usage: obj.assertClientContains(c) without return types