query GuidelineNavigationItemChildren {
  guidelineNavigationItem(id: "…") {
    ... on GuidelineDocumentGroupNavigationItem {
      children(limit: 25, page: 1) {
        items {
          ... on GuidelineDocumentNavigationItem {
            __typename
            children {
              total
              page
              limit
              hasNextPage
              items {
                __typename
                ... on GuidelineDocumentPageCategoryNavigationItem { id }
                ... on GuidelineDocumentPageLinkNavigationItem { id }
                ... on GuidelineDocumentPageNavigationItem { id }
              }
            }
            id
            isHiddenInNavigation
            title
            url
          }
        }
      }
    }
  }
}