code: def test_srcdir():
      """Returns the path where to look for test data files."""
      if "test_srcdir" in flags.FLAGS:
          return flags.FLAGS["test_srcdir"].value
      elif "TEST_SRCDIR" in os.environ:
          return os.environ["TEST_SRCDIR"]
      else:
          raise RuntimeError("Missing TEST_SRCDIR environment.")
  
imports: import os
  import socket
  import sys
  import threading
  from absl import flags
  import tensorflow
  from tensorflow_hub import resolver
label_desc: Use image node_id 5 for calling a global function with example usage: test_srcdir() and returns: flags, os