sticker

record sticker {
  emoji: option​<string>,
  file-id: string,
  file-size: option​<s32>,
  file-unique-id: string,
  height: s32,
  is-animated: bool,
  mask-position: option​<mask-position>,
  set-name: option​<string>,
  thumb: option​<photo-size>,
  width: s32,
}