Part of the statistics example (https://pypsa.readthedocs.io/en/latest/examples/statistics.html) might be outdated.

It would be good if it covered the new features (e.g. https://pypsa.readthedocs.io/en/latest/api/statistics.html#statistic-groupers).

xref https://groups.google.com/g/pypsa/c/cz1OSnKzkhc