在扩展类的静态方法中使用扩展方法

using System;

namespace ExtensionMethods
{
    public static class StringExtensions
    {
        public static string Reverse(this string str)
        {
            char[] charArray = str.ToCharArray();
            Array.Reverse(charArray);
            return new string(charArray);
        }
    }

    public static class StaticClass
    {
        public static void StaticMethod()
        {
            string str = "Hello World";
            string reversedStr = str.Reverse();
            Console.WriteLine(reversedStr);
        }
    }

    public class Program
    {
        public static void Main(string[] args)
        {
            StaticClass.StaticMethod();
        }
    }
}