code: def validate_tls_options():
      from modules.shared_cmd_options import cmd_opts
  
      if not (cmd_opts.tls_keyfile and cmd_opts.tls_certfile):
          return
  
      try:
          if not os.path.exists(cmd_opts.tls_keyfile):
              print("Invalid path to TLS keyfile given")
          if not os.path.exists(cmd_opts.tls_certfile):
              print(
                  f"Invalid path to TLS certfile: '{cmd_opts.tls_certfile}'"
              )
      except TypeError:
          cmd_opts.tls_keyfile = cmd_opts.tls_certfile = None
          print("TLS setup invalid, running webui without TLS")
      else:
          print("Running with TLS")
      startup_timer.record("TLS")
  
file_path: stable-diffusion-webui/modules/initialize_util.py
imports: import json
  import os
  import signal
  import sys
  import re
  from modules.timer import startup_timer
label_desc: Use image node_id 5 for calling a global function with example usage: validate_tls_options() without return types