code: def on_run_start(self, config: DictConfig, **kwargs: Any) -> None:
      log.info(f"{self.name} on_run_start")
  
file_path: hydra/tests/test_apps/app_with_callbacks/custom_callback/my_app.py
imports: import logging
  from typing import Any
  from omegaconf import DictConfig, OmegaConf
  import hydra
  from hydra.core.utils import JobReturn
  from hydra.experimental.callback import Callback
label_desc: Use image node_id 4 for calling the CustomCallback obj's underlying member method code with example usage: obj.on_run_start(config) without return types