recurrence property
The recurring schedule for the action, in Unix cron syntax format. This
format consists of five fields separated by white spaces: Minute Hour
Day_of_Month Month_of_Year Day_of_Week. The value must be in quotes
(for example, "30 0 1 1,6,12 *"). For more information about
this format, see Crontab.
When StartTime and EndTime are specified with
Recurrence, they form the boundaries of when the recurring
action starts and stops.
Implementation
final String? recurrence;