code: def test_start_from_non_existing_snapshot():
      """
      Validates that Torchserve should fail to start when we pass a non-existent snapshot
       as an input snapshot while starting Torchserve.
      """
      test_utils.stop_torchserve()
      test_utils.start_torchserve(
          snapshot_file="logs/config/junk-snapshot.cfg"
      )
      try:
          response = requests.get("http://127.0.0.1:8081/models/")
      except:
          assert (
              True
          ), "Failed to start Torchserve using a Non Existing Snapshot"
      else:
          assert False, (
              "Something is not right!! Successfully started Torchserve "
              "using Non Existing Snapshot File!!"
          )
  
imports: import platform
  import time
  import os
  import glob
  import requests
  import json
  import test_utils
label_desc: Use image node_id 12 for calling a global function with example usage: test_start_from_non_existing_snapshot() without return types