anchor.diff:  <button (click)="start()">Start</button>
   <button (click)="stop()">Stop</button>
   <button (click)="reset()">Reset</button>
  +<p *ng-if="isPomotime()">Currently in pomodoro</p>
  +<p *ng-if="!isPomotime()">Currently in rest</p>
   <p>Pomodoro duration: <i>{{ durationPomodoro }}</i>
   <input #durationpomodoro>
   <button (click)="setDurationPomodoro(durationpomodoro.value)">change</button>
  
positive.code: <input #durationrest>
  <button (click)="setDurationRest(durationrest.value)">change</button>
  </p>
  ''')
  
  class Clock{
  
  
negative.code:   Stopwatch watch = new Stopwatch();
    Timer timer;
  
    ClockState currentState;
  
    Clock(){
      startPomodoroAt = (25*60);
      startRestAt = (5*60);
      durationRest = prettyPrintTime(startRestAt);
      durationPomodoro = prettyPrintTime(startPomodoroAt);
      counter= prettyPrintTime(25*60);
      currentState = ClockState.pomodoro;
    }
    
    void start() {
  