docstr: Method used to exit the application.
docstr_tok: ["Method","used","to","exit","the","application","."]
code: def stop(self, end_msg: str = "") -> None:
      """Method used to exit the application."""
      if end_msg:
          print(end_msg)
      raise ExitAppException
  
imports: import inspect
  import warnings
  from copy import deepcopy
  from datetime import datetime
  from types import FrameType
  from typing import TYPE_CHECKING, Any, Dict, Generator, Iterable, List, Optional, Tuple, Union, cast
  from deepdiff import DeepHash
  from lightning.app.core.work import LightningWork
  from lightning.app.frontend import Frontend
  from lightning.app.storage.drive import Drive, _maybe_create_drive
  from lightning.app.storage.path import Path
  from lightning.app.utilities.app_helpers import _is_json_serializable, _LightningAppRef, _set_child_name, is_overridden
  from lightning.app.utilities.component import _sanitize_state
  from lightning.app.utilities.exceptions import ExitAppException, LightningFlowException
  from lightning.app.utilities.introspection import _is_init_context, _is_run_context
  from lightning.app.utilities.packaging.cloud_compute import CloudCompute, _maybe_create_cloud_compute
label_desc: Use image node_id 17 for calling the LightningFlow obj's underlying member method code with example usage: obj.stop(end_msg) without return types