presto-main/src/main/java/io/prestosql/type/DateTimeOperators.java/DateTimeOperators/timestampWithTimeZonePlusIntervalYearToMonth
class DateTimeOperators:    @ScalarOperator(ADD)
    @SqlType(StandardTypes.TIMESTAMP_WITH_TIME_ZONE)
    public static long timestampWithTimeZonePlusIntervalYearToMonth(@SqlType(StandardTypes.TIMESTAMP_WITH_TIME_ZONE) long left, @SqlType(StandardTypes.INTERVAL_YEAR_TO_MONTH) long right)
    {
        return updateMillisUtc(unpackChronology(left).monthOfYear().add(unpackMillisUtc(left), right), left);
    }