public override void Execute(IEnumerable <String> arguments) { if (!arguments.Any()) { base.Execute(arguments); return; } if (!Int32.TryParse(arguments.First(), out Int32 height)) { Writer.WriteLine($"Pyramid height of \"{arguments.First()}\" must be an integer"); return; } IEnumerable <String> pyramidBlockArguments = arguments.Skip(1); if (!pyramidBlockArguments.Any()) { Writer.WriteLine("Pyramid block not supplied."); return; } String pyramidBlock = String.Join(' ', pyramidBlockArguments); var pyramid = PyramidBuilder.Get(pyramidBlock, height); foreach (var line in pyramid) { TwitchClientManager.SpoolMessage(line); } }