YuriyGuts.RegexBuilder.RegexNodeGroupReference.ToRegexPattern C# (CSharp) Method

        public override string ToRegexPattern()
        {
            string result;
            if (GroupIndex.HasValue)
            {
                result = "\\" + GroupIndex;
            }
            else
            {
                result = string.Format(CultureInfo.InvariantCulture, "\\k<{0}>", GroupName);
            }

            if (HasQuantifier)
            {
                result += Quantifier.ToRegexPattern();
            }

            return result;
        }