firePropertyChange(MODEL_CHANGED_PROPERTY, oldModel, sliderModel);
firePropertyChange("model", oldModel, sliderModel);
  public void setModel(BoundedRangeModel model)  {    // I didn't do the null pointer check on purpose.    // If you try it with Sun's, it'll go ahead and set it to null    // and bork the next time it tries to access the model.    if (model != sliderModel)      {	BoundedRangeModel oldModel = sliderModel;	sliderModel = model;	oldModel.removeChangeListener(changeListener);	sliderModel.addChangeListener(changeListener);	firePropertyChange(MODEL_CHANGED_PROPERTY, oldModel, sliderModel);      }  }