예제 #1
0
 public function execute()
 {
     $this->stereo->on();
     $this->stereo->setCD();
     $this->stereo->setVolume(11);
 }
예제 #2
0
 public function undo()
 {
     $this->stereo->on();
 }
예제 #3
0
 public function execute()
 {
     $this->stereo->on();
 }