query BrandGuidelinesNavigationChildren {
  brand(id: "…") {
    guidelines(limit: 25, page: 1) {
      items {
        navigation(limit: 25, page: 1) {
          items {
            ... on GuidelineDocumentNavigationItem {
              children(limit: 25, page: 1) {
                items {
                  ... on GuidelineDocumentPageCategoryNavigationItem {
                    __typename
                    children {
                      total
                      page
                      limit
                      hasNextPage
                      items {
                        __typename
                        ... on GuidelineDocumentPageLinkNavigationItem { id }
                        ... on GuidelineDocumentPageNavigationItem { id }
                      }
                    }
                    id
                    title
                    url
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}