myRawRowKeyPaths = new PropertyListSet();
myRawRowKeyPaths = new TreeSet();
  public void addRawRowKeyPath(String _rawRowKeyPath, boolean _fireEvents) {    if (_fireEvents) {      Set oldRawRowKeyPaths = myRawRowKeyPaths;      myRawRowKeyPaths = new PropertyListSet();      if (oldRawRowKeyPaths != null) {        myRawRowKeyPaths.addAll(oldRawRowKeyPaths);      }      myRawRowKeyPaths.add(_rawRowKeyPath);      firePropertyChange(EOFetchSpecification.RAW_ROW_KEY_PATHS, oldRawRowKeyPaths, myRawRowKeyPaths);    }    else {      myRawRowKeyPaths.add(_rawRowKeyPath);    }  }