Bug 138824 [CommonNavigator] Remove obsolete API
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/navigator/INavigatorSaveablesService.java
* The given viewer's selection will be used by
	 * {@link #getActiveSaveables()} to determine the active saveables. The
	 * active saveables are determined by iterating over the current selection,
	 * and for each element, walking up its parent chain until an element
	 * representing a saveable is found, or a root element is reached.
	 * </p>
	 * 
	 * @param source
	 * @param viewer
	 * @param listener
	 * 
	 */
	public void init(ISaveablesSource source, StructuredViewer viewer,
			ISaveablesLifecycleListener listener);
	/**
	 * Returns the Saveable objects for which elements are contained in the
	 * tree.
	 * 
	 * @return the saveables
	 */
	public Saveable[] getSaveables();
	/**
	 * Returns the active saveables based on the current selection. This method
	 * must be called on the UI thread.
	 * 
	 * @return the active saveables based on the current selection
	 */
	public Saveable[] getActiveSaveables();
}