Polymorphic mutation / operation

[wardle]

Hi all,

I am building a login mutation (operation) but have multiple backend login providers that will return user data. I'm currently federating these manually in a single defmutation - but different resolvers return different levels of user data - which I map manually into whatever properties I define in ::pco/output - but of course, with resolvers, it would be fine to return as-is and provide resolvers to allow clients to do the login and request whatever they want.

So, my question is: is there a hook that I can use to force a generic request for an operation such as "login" to be satisfied by a specific mutation?