text: import SimpleRemoteControl from './SimpleRemoteControl';
  import Light from '../../common/Light';
  import LightOnCommand from './LightOnCommand';
  
  let simpleRemoteControl = new SimpleRemoteControl();
  let light = new Light();
  let lightCommand = new LightOnCommand(light);
  
  simpleRemoteControl.setCommand(lightCommand);
  simpleRemoteControl.buttonWasPressed();
  simpleRemoteControl.buttonUndoWasPressed();
  