Method forward

concurrent/Pizza.java:14–18

()

    int effort; // Needed to get to the next step
    Step(int effort) { this.effort = effort; }
    Step forward() {
      if(equals(BOXED)) return BOXED;
      new Nap(effort * 0.1);
      return values()[ordinal() + 1];
    }
  }
  private Step step = Step.DOUGH;
  private final int id;