https://huggingface.co/datasets/michaelu0826/ai_toolkit_code/resolve/main/extensions_built_in/flex2/__init__.py
hf download hf://datasets/michaelu0826/ai_toolkit_code/extensions_built_in/flex2/__init__.py
curl -L -o __init__.py https://huggingface.co/datasets/michaelu0826/ai_toolkit_code/resolve/main/extensions_built_in/flex2/__init__.py
