// C# Extension Method
// Doc: https://csharp-extension.com/en/method/1002621/stringbuilder-getindexafternextsinglequote
// @nuget: Z.ExtensionMethods
using System;
using System.Text;
public class Program
{
public static void Main()
var test = new StringBuilder("Fizz\'Buzz\'Fizz",0);
// C# Extension Method: StringBuilder - GetIndexAfterNextSingleQuote
var index = test.GetIndexAfterNextSingleQuote();
Console.WriteLine(index);
}