public static void Main(string[] args)
{
ConcreteVisitor visitor = new ConcreteVisitor();
ConcreteElement1 concreteElement1 = new ConcreteElement1();
concreteElement1.accept(visitor);
ConcreteElement2 concreteElement2 = new ConcreteElement2();
concreteElement2.accept(visitor);
}
public void apply(ConcreteElement1 concreteElement1)
{
Console.WriteLine("Applying on " + nameof(concreteElement1));
}