code: def special_method():
      return "Hi, I'm an external lightning flow component and can be added to any lightning project."
  
file_path: pytorch-lightning/tests/tests_app/components/sample_package_repo/external_lightning_component_package/__init__.py
imports: from lightning.app import LightningFlow, LightningWork
label_desc: Use image node_id 1 for calling the MyCustomLightningFlow obj's underlying member method code with example usage: obj.special_method() and returns: str