Pihrtsoft.Text.RegularExpressions.Linq.Chars.QuestionMark C# (CSharp) Method

        public static CharGrouping QuestionMark() => Character(AsciiChar.QuestionMark);

 /// <summary>
 /// Appends a pattern that matches a question mark.
 /// </summary>
 /// <returns></returns>
 public CharGrouping QuestionMark() => Append(Chars.QuestionMark());