code: def test_start_from_latest():
      """
      Validates if latest snapshot file is picked if we dont pass snapshot arg explicitly.
      """
      test_utils.start_torchserve()
      response = requests.get("http://127.0.0.1:8081/models/")
      assert (
          json.loads(response.content)["models"][0]["modelName"]
          == "densenet161"
      )
      test_utils.stop_torchserve()
  
imports: import platform
  import time
  import os
  import glob
  import requests
  import json
  import test_utils
label_desc: Use image node_id 8 for calling a global function with example usage: test_start_from_latest() without return types