Hook in mutations about gqlify

[jthegedus]

Is this intended to let developers use fields with computed values?

A trivial example:

afterQuery

function userComputeFullname(user) {
  return user.firstname + user.lastname;
}

type User {
  firstname: String
  lastname: String
  fullname: String @afterQuery(name: "userComputeFullname")
}

beforeCreate

function userComputeFullname(parent, args, context, info) {
  return args.data.firstname + args.data.surname;
}

type User {
  firstname: String
  lastname: String
  fullname: String @beforeCreate(resolverName: "userComputeFullname")
} 

or would this need some other mechanism to support custom resolvers?