mutation GalleryChapterCreate(
  $title: String!,
  $image_index: Int!,
  $gallery_id: ID!) {
  galleryChapterCreate(input: {
                              title: $title,
                              image_index: $image_index,
                              gallery_id: $gallery_id,
                            }) {
    ...GalleryChapterData
  }
}

mutation GalleryChapterUpdate(
  $id: ID!,
  $title: String!,
  $image_index: Int!,
  $gallery_id: ID!) {
  galleryChapterUpdate(input: {
                              id: $id,
                              title: $title,
                              image_index: $image_index,
                              gallery_id: $gallery_id,
                            }) {
    ...GalleryChapterData
  }
}

mutation GalleryChapterDestroy($id: ID!) {
  galleryChapterDestroy(id: $id)
}