copy abstract method

UDate copy({
  1. int? year,
  2. int? month,
  3. int? day,
  4. int? hour,
  5. int? minute,
  6. int? second,
  7. int? millisecond,
})

Copy with some parts changed; throws RangeError when the day does not exist.

Implementation

UDate copy({int? year, int? month, int? day, int? hour, int? minute, int? second, int? millisecond});