How to convert an action to a defined delegate of the same signature?

Question

class Test
{
    public delegate void FruitDelegate(Fruit f);

    public void Notify(Action del) where T : Fruit
    {
        FruitDelegate f = d         


        

Answer 1

What about something like this?

public void Notify(Action del) where T : Fruit
{
    FruitDelegate f = fruit => del((T)fruit);
}

The FruitDelegate instance, when invoked, would throw an InvalidCastException if, say, an AppleHandler was invoked with a Banana argument.