startTime and endTime are not documented?

[jasperblues]

What do the following startTime and endTime configurations do, there are no associated API docs?

    @Cron('0 0 2 * *', {
        startTime: new Date(),
        endTime: new Date(new Date().getTime() + 24 * 60 * 60 * 1000),
    })

We can already set the scheduled interval with cron.

[tabuckner]

+1 for explanation in docs please :)