anchor.diff:    node: Article
   }
   
  +type ArticleFeatureSection {
  +  image: Image
  +  layout: ArticleFeatureSectionType!
  +  title: String
  +}
  +
  +enum ArticleFeatureSectionType {
  +  BASIC
  +  FULLSCREEN
  +  SPLIT
  +  TEXT
  +}
  +
  +union ArticleHero = ArticleFeatureSection
  +
  +type ArticleImageSection {
  +  caption: String
  +  id: ID!
  +  image: Image
  +  layout: String
  +}
  +
  +enum ArticleLayout {
  +  FEATURE
  +  STANDARD
  +}
  +
   type ArticleSectionCallout {
     article: String
     hideImage: String
  
positive.code: 
    # A type-specific ID.
    internalID: ID!
    publishedAt(
      format: String
  
  
negative.code:   cached: Int
    channelID: String
    contributingAuthors: [Author]
    description: String
    hero: ArticleHero
    href: String
  
    # A globally unique ID.
  