mutation DiscardFormDraft($input: DiscardFormDraftInput!) {
  discardFormDraft(input: $input) {
    versionNumber
    versionId
    schema
    formId
    form {
      id
      purpose
      audience
      draftSchema
      draftRevision
      publishedVersion {
        id
        number
        schema
        publishedAt
        publisherId
      }
    }
    fields
  }
}

{
  "input": {
    "expectedRevision": 1
  }
}

{
  "data": {
    "discardFormDraft": {
      "versionNumber": 1,
      "versionId": "id",
      "schema": "value",
      "formId": "id",
      "form": {
        "id": "id",
        "purpose": "string",
        "audience": "string",
        "draftSchema": "value",
        "draftRevision": 1,
        "publishedVersion": {
          "id": "id",
          "number": 1,
          "schema": "value",
          "publishedAt": "value",
          "publisherId": "id"
        }
      },
      "fields": [
        "value"
      ]
    }
  }
}