code: def generate_secret_key() -> str:
      """Generate a new securely-generated secret key appropriate for SHA-256
      HMAC signatures.
  
      This key could be used to sign Bokeh server session IDs, for example.
      """
      return _get_random_string()
  
imports: from __future__ import annotations
  import logging
  import base64
  import calendar
  import codecs
  import datetime
  import hashlib
  import hmac
  import json
  import time
  import zlib
  from typing import TYPE_CHECKING, Any
  from ..core.types import ID
  from ..settings import settings
  from .warnings import warn
label_desc: Use image node_id 1 for calling a global function with example usage: generate_secret_key() and returns: _get_random_string