How to implement data fetchers for nested mutation.

[sriramgopalan-awx]

type Mutation {
    topLevel: MyTopLevelMutation!
}

type MyTopLevelMutation {
 
    signUp(input: UserInput!): UserPayload!
    
    #...more mutations
}

type UserInput {
   first: String!
   last: String!
}

type UserPayload {
    success: Boolean!
    id: ID!
}

As you see in the above schema, I have a nested mutation structure and the operations are not at the root level. Now how do I implement data fetchers for topLevel field and for sign up? Any help will be really appreciated.

Netflix/dgs-framework#528 - In this issue they refer to testing but I would like to know the implementation of the data fetchers.

[MichalLytek]

Nested mutations are an invalid pattern - see #1219 #1045 #781 #712 #312 #64