public void export(DataOutputStream out) throws IOException {
  out.writeInt(seqId);
  if (info.isRowBlockEnabled())   out.writeInt(nRows);
  export(out,primaryKey);
  for (  ByteArray cb : cellBlocks) {
    export(out,cb);
  }
}

public void export ( DataOutputStream out ) throws IOException { out . writeInt ( seqId ) ; if ( info . isRowBlockEnabled ( ) ) out . writeInt ( nRows ) ; export ( out , primaryKey ) ; for ( ByteArray cb : cellBlocks ) { export ( out , cb ) ; } }
write data to given output stream , like serialize
