using System;

public class Program

{

    public static void Main()

    {

        var vegetation = new Vegetation();

        vegetation.OnDamageTaken += () => VegetationDestroyed();

        Console.WriteLine("test");

        vegetation.InvokeEvent();

    }

    public static bool VegetationDestroyed()

    {

        Console.WriteLine("event was invoked");

        return true;

    }

}

​

public class Vegetation

{

    public event Action OnDamageTaken;

    public void InvokeEvent()

    {

        OnDamageTaken.Invoke();

    }

}