@JvmStatic fun between(fromTime: Instant, untilTime: Instant): TimeWindow
Creates a TimeWindow with the time interval [fromTime, untilTime). midpoint will return fromTime + (untilTime - fromTime) / 2.
[fromTime, untilTime)
fromTime + (untilTime - fromTime) / 2
IllegalArgumentException - If fromTime ≥ untilTime
IllegalArgumentException