using System;

public class Program

{

    public static Random Random = new Random();

    public static void Main()

    {

        bool x = true;

        Console.WriteLine($"X: {x}");

        Mutate(__makeref(x), false);

        Console.WriteLine($"X: {x}");

    }

    public static void Mutate<X>(TypedReference tRef, X newValue)

    {

        __refvalue(tRef, X) = newValue;

    }

}