static void CovarianceExample()
{
Console.WriteLine("Covariance Example");
VarianceDel del = Method1;
del += Method2;
//Thus, covariance allows you to assign a method to the delegate that has a less derived return type.
Animal animal = del(new Dog());
}
static void ContravarianceExample()
{
Console.WriteLine("Contravariance Example");
VarianceDel del = Method1;
del += Method2;
//Method3 has a parameter of Animal class whereas delegate expects a parameter of Dog class.
del += Method3;
Animal animal = del(new Dog());
}
