Its more like 30 lines of code without the prints. However, one generally should code generic functions for this. The k8s apimachinery module has helper functions which is useful for this sort of stuff. Ex: `NestedFieldNoCopy` and its wrapper functions.
Sure, in production you'd definitely want something like that, but the context was an interview exercise, I don't think you should go coding generic wrappers in that context.
https://github.com/kubernetes/apimachinery/blob/95b78024e3fe...
Ideally, such `nested` map helper functions should be part of the stdlib.