apollo-federation validate input field in another subgraph

Question

in microservice project I have configured graphql, apollo-federation, apollo-gateway.

Menu service

mutation createMenu(location_id: ID!): Menu

Location service

type Location{
    id: ID!
}
type Query{
    location(id: ID!): Location
}

in menu create resolver I want to get location data

storeMenu(_, location_id, __, ___){
    // how to get location data because location is located in external service
}

I am familiar with @key, @external, extends. But this is for type object not works with input type