Returns the xs:dateTime that is a given duration after a specified
xs:dateTime (or before, if the duration is negative).
xs:dateTime and an
xs:yearMonthDuration value. op:add-yearMonthDuration-to-dateTime( $arg1 as xs:dateTime,$arg2 as xs:yearMonthDurationxs:dateTimeThe function returns the result of adding $arg2 to the value of
$arg1 using the algorithm described in Appendix E of , disregarding the rule about leap seconds. If $arg2
is negative, then the result xs:dateTime precedes $arg1.
The result has the same timezone as $arg1. If $arg1 has no
timezone, the result has no timezone.
The expression op:add-yearMonthDuration-to-dateTime(xs:dateTime("2000-10-30T11:12:00"),
xs:yearMonthDuration("P1Y2M")) returns xs:dateTime("2001-12-30T11:12:00").