Where are the docs for the `normalize` function that appears in Traefik docs?

Question

Traefik v2.10's documentation for the docker provider says the default rule is:

Host(`{{ normalize .Name }}`)

Where can I find the documentation for the normalize function?

It does not appear to be in the Traefik docs, nor the Go template docs, or the sprig template docs.

Answer 1

I was today looking for the same thing. Finally I came to this

https://github.com/traefik/traefik/blob/master/pkg/provider/configuration.go#L478

Explainig the function wouldn't fit here since I do not parse Go in my head.

I will desipher that with Go reference manual. Basic string operations.