CommandLine.Text.HelpText.AddLine C# (CSharp) Method

        private static void AddLine(StringBuilder builder, string value)
        {
            //Validator.CheckIsNullOrEmpty(value, "value");
            Validator.CheckIsNull(value, "value");

            if (builder.Length > 0)
            {
                builder.Append(Environment.NewLine);
            }
            builder.Append(value);
        }