extend schema @link(url: "https://specs.apollo.dev/federation/v2.3", import: ["@interfaceObject", "@key", "@override", "@shareable"])

type Query {
  getMammoth: Mammoth
}

type Mammoth @shareable {
  weightGrams: Int
  tuskLength: Int @override(from: "steppe") # Error: subgraph overrides itself
}