Bug 81070 ElementMapper should not use Integer keys computed from System#identityHashCode
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/workingsets/WorkingSetModel.java
OthersWorkingSetUpdater.ID.equals(((IWorkingSet)fActiveWorkingSets.get(1)).getId());
    }
    
    public void configured() {
    	fConfigured= true;
    }
    
    
    
	/**
     * Adds a property change listener.
     * 
     * @param listener the property change listener to add
     */
    public void addPropertyChangeListener(IPropertyChangeListener listener) {
    	fListeners.add(listener);
    }
    
    /**
     * Removes the property change listener.
     * 
     * @param listener the property change listener to remove
     */
    public void removePropertyChangeListener(IPropertyChangeListener listener) {
    	fListeners.remove(listener);
    }
    
    public IWorkingSet[] getActiveWorkingSets() {
    	return (IWorkingSet[])fActiveWorkingSets.toArray(new IWorkingSet[fActiveWorkingSets.size()]);
    }