presto-rcfile/src/main/java/io/prestosql/rcfile/text/TimestampEncoding.java/TimestampEncoding/parseTimestamp
class TimestampEncoding:    private long parseTimestamp(Slice slice, int offset, int length)
    {
        //noinspection deprecation
        return dateTimeFormatter.parseMillis(new String(slice.getBytes(offset, length), US_ASCII));
    }