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