How to use Wildcard Domains in acme-dns doc example

Traefik Traefik v2 (latest)
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1

Following along in DNS Challenge - Traefik and looking at Let's Encrypt - Traefik I added the resolver line before this sub-section, but what would be the example line I enter in for wildcard domains?

2

This is prob it. EntryPoints - Traefik

--entrypoints.websecure.http.tls.domains[0].main=example.com
--entrypoints.websecure.http.tls.domains[0].sans=*.example.com