@Override public void writeExternal(ObjectOutput out) throws IOException {
  super.writeExternal(out);
  out.writeInt(DBIDUtil.asInteger(routingObjectID));
  out.writeDouble(parentDistance);
  out.writeDouble(coveringRadius);
}

@ Override public void writeExternal ( ObjectOutput out ) throws IOException { super . writeExternal ( out ) ; out . writeInt ( DBIDUtil . asInteger ( routingObjectID ) ) ; out . writeDouble ( parentDistance ) ; out . writeDouble ( coveringRadius ) ; }
calls the super method and writes the routingobjectid , the parentdistance and the coveringradius of this entry to the specified stream .
