static void Chat(string group_id, LobiAPI.Json.Chat chat)
 {
     if (chat.assets != null && chat.assets.Count() > 0)
     {
         foreach (var asset in chat.assets)
         {
             Console.WriteLine(asset.raw_url);
         }
     }
     Console.WriteLine(chat.message);
 }
 static void Chat(string group_id, LobiAPI.Json.Chat chat)
 {
     Console.WriteLine(chat.message);
 }