code: def mock_request_compute_metadata(path):
      if path == "project/project-id":
          return "test-project"
      elif path == "instance/zone":
          return "projects/test-project/locations/us-central1-c"
      elif path == "instance/network-interfaces/0/ip":
          return "10.128.1.2"
      return ""
  
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 2 for calling a global function with example usage: mock_request_compute_metadata(path) and returns: str, str, str, str