public Scan setTimeRange(long minStamp, long maxStamp) throws IOException {
    tr = TimeRange.between(minStamp, maxStamp);
    return this;
  }
Get versions of columns only within the specified timestamp range, [minStamp, maxStamp). Note,
default maximum versions to return is 1. If your time range spans more than one version and you
want all versions returned, up the number of versions beyond the default.
@param minStamp minimum timestamp value, inclusive
@param maxStamp maximum timestamp value, exclusive
@see #readAllVersions()
@see #readVersions(int)
hbase-client/src/main/java/org/apache/hadoop/hbase/client/Scan.java