duration property
IsoDuration?
duration
The duration of this event.
either DTEND
or DURATION
may occur, but not both
Compare end
Implementation
IsoDuration? get duration =>
getProperty<DurationProperty>(DurationProperty.propertyName)?.duration;
Sets the duration
Implementation
set duration(IsoDuration? value) => setOrRemoveProperty(
DurationProperty.propertyName, DurationProperty.create(value));