Hello, I'm trying to call a function from a class of an object. I have the Object but no clue to access the right Component.

A little Example:

public class Heal : Effect {
    public void ApplyEffect(GameObject user, int amount) {
       print("Healing " + user.name + " for " + amount);
    }
}

Thats the Method I want to Call from this:

public class ItemPotion : Item {
    public GameObject _effect;
    public int _value;

    public void Use(GameObject user) {
       Type component = ???
       component.ApplyEffect(user, 25);
    }
}

I cant call it with GetComponent() because it should work with any other class as well. When I call the Method, I know the Method is there because every class from Effect has this one, but I dont know the concrete Name of the Class.

Hope you can Help.