code: def _get_app_id() -> str:
      return os.environ["LIGHTNING_CLOUD_APP_ID"]
  
imports: import os
  from typing import Optional
  from lightning_cloud.openapi import AppinstancesIdBody, Externalv1LightningappInstance
  from lightning.app.core import constants
  from lightning.app.core.queues import QueuingSystem
  from lightning.app.launcher.lightning_backend import CloudBackend
  from lightning.app.runners.backends.backend import Backend
  from lightning.app.runners.backends.mp_process import MultiProcessingBackend
  from lightning.app.utilities.network import LightningClient
label_desc: Use image node_id 14 for calling the CloudHybridBackend obj's underlying member method code with example usage: obj._get_app_id() and returns: os