@Override public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
  super.readExternal(in);
  conservativeApproximation=(ApproximationLine)in.readObject();
}

@ Override public void readExternal ( ObjectInput in ) throws IOException , ClassNotFoundException { super . readExternal ( in ) ; conservativeApproximation = ( ApproximationLine ) in . readObject ( ) ; }
calls the super method and reads the the conservative approximation of the knn distances of this entry from the specified input stream .
