public static async Task AsyncMain()
{
HttpClient httpClient = new HttpClient();
// Initialize YoutubeClient
YoutubeClient ytClient = new YoutubeClient(httpClient);
// Get sond PlaylistRecommendation by video Id.
YoutubePlaylist youtubePlaylist = await ytClient.GetPlaylistRecommendation("9CyMi-n36rg");
Console.WriteLine(youtubePlaylist);
}