Mark the specified date as a holiday in this calendar.
Mark the specified date as a holiday (i.e., a non-business day) in this calendar. Extend the valid range of this calendar if necessary. If date is already marked as a holiday, this method has no effect. See {Iterator Invalidation} for information regarding which iterators are affected by the use of this method.
| Name | Description |
|---|---|
| date | date to mark as a holiday |