presto-main/src/main/java/io/prestosql/operator/scalar/DateTimeFunctions.java/DateTimeFunctions/parseDuration
class DateTimeFunctions:    @Description("convert duration string to an interval")
    @ScalarFunction("parse_duration")
    @LiteralParameters("x")
    @SqlType(StandardTypes.INTERVAL_DAY_TO_SECOND)
    public static long parseDuration(@SqlType("varchar(x)") Slice duration)
    {
        try {
            return Duration.valueOf(duration.toStringUtf8()).toMillis();
        }
        catch (IllegalArgumentException e) {
            throw new PrestoException(INVALID_FUNCTION_ARGUMENT, e);
        }
    }