@mapTo

Definition
directive @mapTo(
objectField: String!
) on FIELD_DEFINITION

You can use the @mapTo directive to map/rename values from the upstream response.

Example usage
type Headers {
accept: String! @mapTo(objectField: "Accept")
host: String! @mapTo(objectField: "Host")
acceptEncoding: String @mapTo(objectField: "Accept-Encoding")
}

In this case the upstream responds with a field named "Accept" which will be mapped to the GraphQL field "accept".