@Override
  public Pair<Long, Long> getPossibleStartTimeAndEndTime(
      PartialPath devicePattern, Set<IDeviceID> deviceMatchInfo) {
    return new Pair<>(startTime, endTime);
  }
end times. The value is Long.MIN_VALUE if it's an unsealed sequence tsfile
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/storageengine/dataregion/tsfile/timeindex/FileTimeIndex.java