// Virtuelle Methoden:
public class Auto : GLib.Object {
	public virtual void starten() {print("tucker");}
}

public class Ferrari : Auto {
	public override void starten() {print("brumm");}
}

public class BMW : Auto {
	public new void starten(string ton) {print(ton);}
}

[...]

BMW b = new BMW();
b.starten("brumm");