protected HRegion initHRegion(TableName tableName, String callingMethod, Configuration conf,
    byte[]... families) throws IOException {
    return initHRegion(tableName, callingMethod, conf, false, families);
  }
@return A region on which you must call {@link HBaseTestingUtil#closeRegionAndWAL(HRegion)}
        when done.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java