如何将Validation<string，Unit>转换为成功时为空的字符串？

using System;
using LanguageExt;

public class Program
{
    public static void Main()
    {
        // 创建一个Validation对象，模拟操作成功
        var successValidation = Validation<string, Unit>.Success(Unit.Default);

        // 创建一个Validation对象，模拟操作失败
        var failureValidation = Validation<string, Unit>.Fail("操作失败");

        // 将Validation转换为成功时为空的字符串
        var successResult = successValidation.Match(
            Succ: _ => "",
            Fail: error => error
        );

        // 将Validation转换为成功时为空的字符串
        var failureResult = failureValidation.Match(
            Succ: _ => "",
            Fail: error => error
        );

        Console.WriteLine("成功时为空的字符串：" + successResult);
        Console.WriteLine("失败时保留原始错误消息：" + failureResult);
    }
}

成功时为空的字符串：
失败时保留原始错误消息：操作失败