Corrections in my GraphQL assumptions, and other stuff

Notes

{
  "query": " query GetAllBooks($q: String, $sort: String, $order: SortOrder, $page: Int, $perPage: Int)
    { books(
      q: $q,
      sort: $sort,
      order: $order,
      page: $page,
      perPage: $perPage
      )

    {
      id
      title
      author
      publishedYear
      genre
      }
    }",

  "variables": {
    "q": "harry potter",
    "sort": "title",
    "order": "asc",
    "page": 2,
    "perPage": 2
  }
}