Apollo rust router - where can one find a fully documented config file and full examples

Where can one find a fully documented router config yaml file? I see snippets in the docs. Looking at the code I see the rust code to manage the config. But no where is there a full yaml config file with comments and showing all avail config parameters (as well as what is optional and not optional).

Since in operationally focused software this is fairly standard to have commented config files as well as full blown examples it’s reasonable to ask for it with this router.

As an example it all the router snippets provided in the docs it is hard to tell what modifier arguments are optional

That doc is not a full reference. I’d like to get a full yaml file with comments and clearly stating what values are optional as well as valid values etc.