convert raw measurement to measurement

  private static List<Measurement> rawToFinalMeasurements(List<RawMeasurement> rawMeasurements,
                                                          long maxIntervalMs) {
    ZonedDateTime utc = ZonedDateTime.now(ZoneOffset.UTC);
    Date date = Date.from(utc.toInstant());
    long startTimeEpochMs = utc.toEpochSecond() * 1000 - (maxIntervalMs + 6000);
    List<Measurement> measurements = rawMeasurements.stream()
            .map(raw -> new Measurement(raw.getId(),
                    Double.valueOf(raw.getSpeed() * 3.6).intValue(),
                    startTimeEpochMs + Double.valueOf(raw.getTime() * 1000).longValue()))
            .collect(Collectors.toList());
    Collections.sort(measurements, (m1, m2) -> Long.compare(m1.getTimestamp(), m2.getTimestamp()));
    return measurements;
  }