public Client()
{
_receiver = new Receiver() { x = 10, y = 11 };
_invoker = new Invoker(
new AddCommand(_receiver),
new SubtractCommand(_receiver));
}
protected CommandBase(Receiver receiver)
{
_receiver = receiver;
}
public SubtractCommand(Receiver r)
: base(r)
{
}
public AddCommand(Receiver r)
: base(r)
{
}