Date.set
$date.set($field, $value) -> Date
Description
Create a new date based on the current date, with the given field set to a new value.
The fields that can be set are:
yearmonthdayhourminutesecond
$date1 = Date.create('2033-03-31 13:21:45')
$date2 = $date1.set('year', 2333)
//=《 Date 2333-03-31 13:21:45 +0000 》