Sample code for SocketTextChannel and SocketVoiceChannel categories

Sample.cs

        // Sample code for showing that SocketCategoryChannel, SocketTextChannel and SocketVoiceChannel work correctly
        // with categories
        // Use this with a test guild that contains some categories with nested text channels and voice channels
        // Should just print out all of the nested channels (and their matching parent categories)
        // and end with "done"
        // not a great automated test, but useful for ensuring that it doesn't crash
        private async Task Client_GuildAvailable1(SocketGuild arg)
        {
            if (arg.Id == 428476681519497218)
            {
                var cat1 = arg.GetChannel(428476681519497219) as SocketCategoryChannel;
                Console.WriteLine($"{cat1.Name}");
                foreach(var subChan in cat1.Channels)
                {
                    Console.WriteLine($"{subChan.Name} - {subChan.Id}");

                    if(subChan is SocketTextChannel)
                    {
                        var text = subChan as SocketTextChannel;
                        var cat = await text.GetCategoryAsync();
                        Console.WriteLine(cat?.Name);
                    }

                    if (subChan is SocketVoiceChannel)
                    {
                        var voice = subChan as SocketVoiceChannel;
                        var cat = await voice.GetCategoryAsync();
                        Console.WriteLine(cat.Name);
                    }

                    if (subChan is INestedChannel)
                    {
                        var n = subChan as INestedChannel;
                        var cat = await n.GetCategoryAsync();
                        Console.WriteLine(cat.Name);
                        Console.WriteLine(n.CategoryId);
                    }
                }

                cat1 = arg.GetChannel(428476681519497221) as SocketCategoryChannel;
                Console.WriteLine($"{cat1.Name}");
                foreach (var subChan in cat1.Channels)
                {
                    Console.WriteLine($"{subChan.Name} - {subChan.Id}");
                }

                Console.WriteLine("done");
            }
        }