The [graphql-tools documentation](https://github.com/apollographql/graphql-tools) mentions that:

> 
> You don’t need to specify resolvers for every type in your schema. If
>  you don’t specify a resolver, GraphQL.js falls back to a default one,
>  which does the following:
> 
> 
> 1. Returns a property from obj with the relevant field name, or
> 2. Calls a function on obj with the relevant field name and passes the query arguments into that function
> 
> 
> 

My question is: how can I specify that function to change the default behavior? 

For example, maybe instead of just returning `object.title` when the client asks for the `title` field, I would like to return `object.title.en`, or `object.title.fr`, etc. depending on the current language. 

It would be nice to be able to specify this as the default behavior without having to spell out resolver functions for every single field?