/**
  * Remove a PropertyChangeListener for a specific property. The case of the name is ignored.
  *
  * @since JAI 1.1
  */
 public void removePropertyChangeListener(String propertyName, PropertyChangeListener listener) {
   eventManager.removePropertyChangeListener(propertyName, listener);
 }
 /**
  * Remove a PropertyChangeListener from the listener list. This removes a PropertyChangeListener
  * that was registered for all properties.
  *
  * @since JAI 1.1
  */
 public void removePropertyChangeListener(PropertyChangeListener listener) {
   eventManager.removePropertyChangeListener(listener);
 }