While adding this part, I was wondering that there is now first a note aboutAdvancedNameConverterInterface to access this data and then a note about it also being available via the parent interfaceNameConverterInterface. However, the discussion aboutAdvancedNameConverterInterface deprecated appears to have yielded no result:symfony/symfony#54531 (comment).

Thank you, Matthias! I've moved your contribution to a new article, as we've rewritten the Serializer docs in the past weeks.