code: public static ZonedDateTime zonedDateTimeOf(final long time, final ZoneId zoneId) {
          return ZonedDateTime.ofInstant(Instant.ofEpochMilli(time), zoneId);
      }
docs: Utility for creating a ZonedDateTime object from a millisecond timestamp.
  
  @param time   Milliseconds since Epoch
  @param zoneId Time zone
  @return ZonedDateTime representing time