code: def load_app_from_file(cls, filepath: str) -> "LightningApp":
      return load_app_from_file(filepath)
  
imports: import multiprocessing
  import os
  import sys
  from dataclasses import dataclass, field
  from pathlib import Path
  from threading import Thread
  from typing import TYPE_CHECKING, Any, Dict, List, Optional, Type, Union
  from lightning.app.core import LightningApp, LightningFlow
  from lightning.app.core.constants import APP_SERVER_HOST, APP_SERVER_PORT
  from lightning.app.runners.backends import Backend, BackendType
  from lightning.app.utilities.app_helpers import Logger
  from lightning.app.utilities.enum import AppStage, CacheCallsKeys, WorkStageStatus, make_status
  from lightning.app.utilities.load_app import load_app_from_file
  from lightning.app.utilities.proxies import WorkRunner
label_desc: Use image node_id 5 for calling the Runtime obj's underlying member method code with example usage: obj.load_app_from_file(cls, filepath) and returns: load_app_from_file