code: def _is_url(id: Optional[str]) -> bool:
      if isinstance(id, str) and (
          id.startswith("https://") or id.startswith("http://")
      ):
          return True
      return False
  
imports: import contextlib
  import functools
  import json
  import os
  import re
  import subprocess
  import sys
  from typing import Dict, Optional
  import arrow
  import click
  import packaging
  import requests
  import rich
  from lightning_cloud.openapi import Externalv1LightningappInstance
  from lightning.app import __package_name__, __version__
  from lightning.app.core.constants import APP_SERVER_PORT
  from lightning.app.utilities.app_helpers import Logger
  from lightning.app.utilities.cloud import _get_project
  from lightning.app.utilities.network import LightningClient
label_desc: Use image node_id 2 for calling a global function with example usage: _is_url(id) and returns: False, True