{
  content {
    article(id: SELECT-CONTENT-ID) {
      _name
      title
      intro{html5}    }
  }
}

"data": {
    "content": {
      "article": {
        "_name": "Visit Berlin",
        "title": "String",
        "intro": {
          "html5": null
        }
      }
    }
  }

ArticleContent:
    type: object
    inherits:
        - AbstractDomainContent
    config:
        interfaces:
            - DomainContent
            - Node
        fields:
            title:
                type: String
                resolve: String
            intro:
                type: RichTextFieldValue
                resolve: RichTextFieldValue

        fields:
            title:
                type: String
                resolve: '@=resolver("DomainFieldValue", [value, "title"])'
            intro:
                type: RichTextFieldValue
                resolve: '@=resolver("DomainFieldValue", [value, "intro"])'