Working GraphQL query with fragment against Drupal 8

gistfile1.txt

{
  nodeQuery(filter: {status: true, type: "article"}, limit: 5) {
    totalCount: count
    entities {
      nid: entityId
      title: entityLabel
      ... on NodeArticle {
        body {
          summary
        }
        ...imageThumbnail
      }
    }
  }
}

fragment imageThumbnail on NodeArticle {
  fieldImage {
    image: derivative(style: thumbnail) {
      url
      height
      width
    }
  }
}