static void MainOLD()
{
var bulb = new Bulb();
var turnOn = new TurnOn(bulb);
var turnOff = new TurnOff(bulb);
var remote = new RemoteControl();
remote.Submit(turnOn);
remote.Submit(turnOff);
Console.ReadKey();
}
public TurnOff(Bulb bulb)
{
this.mBulb = bulb ?? throw new ArgumentNullException("bulb", "Bulb cannot be null");
}
public TurnOn(Bulb bulb) // Constructor
{
this.mBulb = bulb ?? throw new ArgumentNullException("bulb", "Bulb cannot be null");
}