sclass YouTubeChannelInfo {
  S id, title, description, publishedAt;
}

static YouTubeChannelInfo youTubeChannelInfo(S channel) {
  channel = assertNempty(parseYouTubeChannel(channel));
  S url ="https://www.googleapis.com/youtube/v3/channels?part=snippet&id=\*channel*/&key=" + youTubeDataAPIKey();
  Map map = cast loadJSONPage(url);
  printStruct(map);
  new YouTubeChannelInfo info;
  //mapToObject(map, info);
  L items = cast map.get("items");
  Map item = cast first(items);
  mapToObject(item, info);
  Map snippet = cast item.get('snippet);
  mapToObject(snippet, info);
  ret info;
}