public string Clear()
        {
            var s = new ServiceBusSender();

            s.Send("-999");
            return("Cleared the whiteboard");
        }
        public string ColumnAndRow(int column, int row, string colorName = "red")
        {
            Color color = ParseColor(colorName);

            var s   = new ServiceBusSender();
            var msg = columnsAndRowsHelper.ColumnAndRow(column, row, color);

            s.Send(msg);

            return("OK");
        }