code: def probably_relative_url(url: str) -> bool:
      """Return True if a URL is not one of the common absolute URL formats.
  
      Arguments:
          url (str): a URL string
  
      Returns
          bool
  
      """
      return not url.startswith(("http://", "https://", "//"))
  
imports: from __future__ import annotations
  import logging
  import importlib.util
  from os.path import isfile
  from types import ModuleType
  from typing import TYPE_CHECKING, Awaitable, Callable, NewType
  from tornado.httputil import HTTPServerRequest
  from tornado.web import RequestHandler
  from ..util.serialization import make_globally_unique_id
label_desc: Use image node_id 2 for calling a global function with example usage: probably_relative_url(url) and returns: unknown