Referenced type names will be used as the name for the generated GraphQL object type.
For comparison, see inline types.

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Example

interface User {
  id: string;
  name: string;
}

type UserWithoutName = Omit<User, 'name'>;

@graphql.resolver()
class UserResolver {
  @graphql.query()
  getUserId(): UserWithoutName {
    // ...
  }
}
In this example, the UserWithoutName referenced type is utilized as the object type name instead of the automatically generated inline type name OmitUsername derived from Omit<User, 'name'>. 
type UserWithoutName {
  id: String!
}

type Query {
  getUserId: UserWithoutName
}
This showcases how the explicitly named referenced type contributes to the clarity and semantic coherence of the generated GraphQL object type.