protected UnsafeForwardOnlyCron(NaiveRule minute, NaiveRule hour, NaiveRule day, NaiveRule month, NaiveRule week) : base(minute, hour, day, month, week) { }
protected SpanCron(NaiveRule minute, NaiveRule hour, NaiveRule day, NaiveRule month, NaiveRule week) : base(minute, hour, day, month, week) { }