drools-eclipse/org.drools.eclipse/src/main/java/org/drools/eclipse/editors/rete/part/DiagramEditPart.java
public void propertyChange(PropertyChangeEvent evt) {
        String prop = evt.getPropertyName();
        if ( ReteGraph.PROP_CHILD_ADDED.equals( prop ) || ReteGraph.PROP_CHILD_REMOVED.equals( prop ) ) {
            refreshChildren();
        }
    }
public void propertyChange(PropertyChangeEvent evt) {
        String prop = evt.getPropertyName();
        if ( ReteGraph.PROP_CHILD_ADDED.equals( prop ) || ReteGraph.PROP_CHILD_REMOVED.equals( prop ) ) {
            refreshChildren();
        }
    }
/* (non-Javadoc)
@see java.beans.PropertyChangeListener#propertyChange(PropertyChangeEvent)