public TTimeRange setMaxStamp(long maxStamp) {
    this.maxStamp = maxStamp;
    setMaxStampIsSet(true);
    return this;
  }
Returns true if field minStamp is set (has been assigned a value) and false otherwise
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift2/generated/TTimeRange.java