this.activityScheduler.setActivityState(new ActivityPresentationState(this.activityScheduler,this.activity));
this.activityScheduler.setActivityState(new ActivityPresentationState( this.activityScheduler,this.activity, true));
	public void previous ()	{		System.out.println("PostConditionCheckerState-> Previous");		if (this.stepList.size() == 0)		{			this.activityScheduler.setActivityState(new ActivityPresentationState(this.activityScheduler,this.activity));		}		else		{			this.activityScheduler.setActivityState(new LastStepState(this.activityScheduler,this.activity));		}				}