docs: public void setTimeUnit(TimeUnit newTimeUnit) {
  		TimeUnit oldTimeUnit = timeUnit;
  		timeUnit = newTimeUnit == null ? TIME_UNIT_EDEFAULT : newTimeUnit;
  		boolean oldTimeUnitESet = timeUnitESet;
  		timeUnitESet = true;
  		if (eNotificationRequired())
  			eNotify(new ENotificationImpl(this, Notification.SET, BpsimPackage.DISTRIBUTION_PARAMETER__TIME_UNIT, oldTimeUnit, timeUnit, !oldTimeUnitESet));
  	}