class PercentageOfWorkDoneChangedEvent extends AbstractNotificationEvent {

    public boolean isUndetermined() {
        return BigDecimal.ZERO.compareTo(percentage) > 0;
    }

    public  PercentageOfWorkDoneChangedEvent(NotifiableTaskMetadata taskMetadata);
    public  PercentageOfWorkDoneChangedEvent(BigDecimal percentage, NotifiableTaskMetadata taskMetadata);

}