@Override
  public void beforeShipped() throws IOException {
    if (this.prevCell != null) {
      this.prevCell = KeyValueUtil.toNewKeyCell(this.prevCell);
    }
  }
Enqueue the current chunk if it is ready to be written out.
@param closing true if we are closing the file, so we do not expect new keys to show up
hbase-server/src/main/java/org/apache/hadoop/hbase/io/hfile/CompoundBloomFilterWriter.java