Bug 172765 [DataBinding] Consistency when registering property change listeners
tests/org.eclipse.jface.tests.databinding/src/org/eclipse/jface/tests/internal/databinding/internal/beans/Bean.java
private PropertyChangeSupport support = new PropertyChangeSupport(this);
    private String value;
	private List list;
	private Set set;
    
    public Bean() {
    }
    
    public Bean(String value) {
    	this.value = value;
    }
    
    public Bean(List list) {
    	this.list = list;
    }
    
    public Bean(Set set) {
    	this.set = set;
    }
    
    public void addPropertyChangeListener(PropertyChangeListener listener) {
        support.addPropertyChangeListener(listener);
    }
    
    public void removePropertyChangeListener(PropertyChangeListener listener) {