add missing robustness functions in docs #5870

Job	Run time
Black (Python3.9)	1m 4s
test-conda-Python3.9	7m 20s
test-${{ matrix.tox-env }} (Python${{ matrix.python-version }})	0s
test-conda-Python3.12	7m 39s
test-py39-coverage-sbck (Python3.9)	5m 14s
test-py310-coverage (Python3.10)	8m 19s
test-py311-coverage-sbck (Python3.11)	5m 18s
test-py312-coverage-numba (Python3.12)	6m 3s
test-notebooks_doctests (Python3.10)	6m 29s
test-offline-prefetch (Python3.11)	4m 21s
finish	13s
	52m 0s

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