具有共享字段的两种GraphQL类型

给定以下用例，GQL如何定义这些类型

伪代码如下：

type BasicUser {
  id: ID!
  firstName: String!
  lastName: String!
  email: String!
  phone: String
}

type EnhancedUser {
  ...BasicUser
  dob: String
  streetAddress: String
  city: String
  state: String
  zip: String
}