code: public void append(final NamespaceEntry e) throws IOException {
          final byte[] ebytes = nsrec.write(e);
          append(ebytes);
      }
docs: Write a {@link NamespaceEntry namespace entry} to the end of the
  {@link NamespaceRecordFile namespace record file}.
  
  @param e the {@link NamespaceEntry namespace entry} to append
  @throws IOException Thrown if an IO exception occurred appending the
  {@link NamespaceEntry namespace entry} to the
  {@link NamespaceRecordFile record file}.