using System;

using HarmonyLib;

public class Program

{

    public static void Test()

    {

        Console.WriteLine("Test");

    }

    public static void Main()

    {

        var harmony = new Harmony("test");

        harmony.PatchAll();

        Test();

    }

}

​

[HarmonyPatch(typeof(Program), "Test")]

public class PatchClass1

{

    public static void Prefix()

    {

        Console.WriteLine("Prefix 1");

    }

}

​

[HarmonyPatch(typeof(Program), "Test")]

public class PatchClass2

{

    public static void Prefix()

    {

        Console.WriteLine("Prefix 2");

    }

}