code: def run_once(self):
      done = super().run_once()
      if self.root.train_work.best_model_path:
          return True
      return done
  
file_path: pytorch-lightning/tests/integrations_app/public/test_quick_start.py
imports: import logging
  import os
  from unittest import mock
  import pytest
  from click.testing import CliRunner
  from lightning.app import LightningApp
  from lightning.app.cli.lightning_cli import run_app
  from lightning.app.testing.helpers import _RunIf
  from lightning.app.testing.testing import run_app_in_cloud, wait_for
  from integrations_app.public import _PATH_EXAMPLES
label_desc: Use image node_id 2 for calling the QuickStartApp obj's underlying member method code with example usage: obj.run_once() and returns: done, True