mutation CreateScheduleSlugs($displayNames: [String!]!) {
  createScheduleSlugs(displayNames: $displayNames) {
    ok
    slugs
  }
}

{
  "displayNames": [
    "string"
  ]
}

{
  "data": {
    "createScheduleSlugs": {
      "ok": true,
      "slugs": [
        "string"
      ]
    }
  }
}