test/extensions/test_backprop_extension.py

test/extensions/secondorder/secondorder_settings.py

test/extensions/secondorder/hbp

backpack/extensions/secondorder/__init__.py

backpack/extensions/secondorder/diag_hessian/__init__.py
backpack/extensions/secondorder/diag_hessian/conv1d.py
backpack/extensions/secondorder/diag_hessian/conv2d.py
backpack/extensions/secondorder/diag_hessian/conv3d.py

backpack/extensions/__init__.py
