message: vec! can be []
diff: @@ -1770,7 +1770,7 @@ impl Spotify {
  force_play: Option<bool>,
  ) -> ClientResult<()> {
  let params = build_json! {
  - req device_ids => vec![device_id.to_owned()],
  + req device_ids => [device_id],
  opt force_play,
  };
  