Represents a time interval, encoded as a start time (inclusive) and an end time (exclusive).
The start time must be less than or equal to the end time.
When the start equals the end time, the interval is an empty interval.
(matches no time)
When both start and end are unspecified, the interval matches any time.
Represents a time interval, encoded as a start time (inclusive) and an end time (exclusive).
The start time must be less than or equal to the end time. When the start equals the end time, the interval is an empty interval. (matches no time) When both start and end are unspecified, the interval matches any time.