/// <summary>
        /// Appends the specified text to the last line of text.
        /// </summary>
        /// <param name="text"></param>
        public static void ShowAppendedText(RichTextBox textBox, string text, bool addLeadingSpace,
                                            bool includeNewLine)
        {
            RichTextBoxDisplayHelper viewer = new RichTextBoxDisplayHelper(textBox);

            viewer.DisplayAppendedText(text, addLeadingSpace, includeNewLine);
        }