// C# Extension Method
// Doc: https://csharp-extension.com/en/method/1002085/string-repeat
// @nuget: Z.ExtensionMethods
using System;
public class Program
{
public static void Main()
string input = "he";
// C# Extension Method: String - Repeat
string newStr = input.Repeat(5);
Console.WriteLine(newStr);
}