@Override public void writeExternal(ObjectOutput out) throws IOException {
  super.writeExternal(out);
  out.writeInt(entries.length);
  for (  Entry entry : entries) {
    if (entry == null) {
      break;
    }
    entry.writeExternal(out);
  }
}

@ Override public void writeExternal ( ObjectOutput out ) throws IOException { super . writeExternal ( out ) ; out . writeInt ( entries . length ) ; for ( Entry entry : entries ) { if ( entry == null ) { break ; } entry . writeExternal ( out ) ; } }
calls the super method and writes the id of this node , the numentries and the entries array to the specified stream .
